diff --git a/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-heptatonic.yml b/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-heptatonic.yml
new file mode 100644
index 0000000000..0616c02d6f
--- /dev/null
+++ b/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-heptatonic.yml
@@ -0,0 +1,15 @@
+# Leka - iOS Monorepo
+# Copyright 2023 APF France handicap
+# SPDX-License-Identifier: Apache-2.0
+
+id: cd5d93afbd8f4071b25479cd6372a7a9
+name: Xylophone Heptatonic
+description: L'objectif est de jouer de la musique à l'aide du xylophone
+image: activity_color_recognition_1
+sequence:
+  - exercises:
+      - instructions: Joue du xylophone avec Leka
+        interface: musicalInstruments
+        payload:
+          instrument: xylophone
+          scale: majorHeptatonic
diff --git a/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-pentatonic.yml b/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-pentatonic.yml
new file mode 100644
index 0000000000..0615ee6a0f
--- /dev/null
+++ b/Apps/LekaActivityUIExplorer/Resources/GEKNewSystem/activities/activity-xylophone-pentatonic.yml
@@ -0,0 +1,15 @@
+# Leka - iOS Monorepo
+# Copyright 2023 APF France handicap
+# SPDX-License-Identifier: Apache-2.0
+
+id: 264d720bf8904043b97d5d7b3d0e7124
+name: Xylophone Pentatonic
+description: L'objectif est de jouer de la musique à l'aide du xylophone
+image: activity_color_recognition_1
+sequence:
+  - exercises:
+      - instructions: Joue du xylophone avec Leka
+        interface: musicalInstruments
+        payload:
+          instrument: xylophone
+          scale: majorPentatonic
diff --git a/Apps/LekaActivityUIExplorer/Sources/GEKNewSystem/GEKNewSystemView.swift b/Apps/LekaActivityUIExplorer/Sources/GEKNewSystem/GEKNewSystemView.swift
index 8ab826dd70..0f5972b022 100644
--- a/Apps/LekaActivityUIExplorer/Sources/GEKNewSystem/GEKNewSystemView.swift
+++ b/Apps/LekaActivityUIExplorer/Sources/GEKNewSystem/GEKNewSystemView.swift
@@ -36,6 +36,8 @@ let kActivities: [Activity] = [
     ContentKit.decodeActivity("remote-standard"),
     ContentKit.decodeActivity("remote-arrow"),
     ContentKit.decodeActivity("activity-hideAndSeek"),
+    ContentKit.decodeActivity("activity-xylophone-pentatonic"),
+    ContentKit.decodeActivity("activity-xylophone-heptatonic"),
 ]
 
 struct GEKNewSystemView: View {
diff --git a/Modules/ContentKit/Sources/Exercise/Exercice+MusicalInstrument.swift b/Modules/ContentKit/Sources/Exercise/Exercice+MusicalInstrument.swift
new file mode 100644
index 0000000000..ffc25c4798
--- /dev/null
+++ b/Modules/ContentKit/Sources/Exercise/Exercice+MusicalInstrument.swift
@@ -0,0 +1,23 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+public enum MusicalInstrument {
+
+    public struct Payload: Codable {
+        public let instrument: String
+        public let scale: String
+
+        enum CodingKeys: String, CodingKey {
+            case instrument, scale
+        }
+
+        public init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+
+            self.instrument = try container.decode(String.self, forKey: .instrument)
+            self.scale = try container.decode(String.self, forKey: .scale)
+        }
+    }
+
+}
diff --git a/Modules/ContentKit/Sources/Exercise/Exercise+Interface.swift b/Modules/ContentKit/Sources/Exercise/Exercise+Interface.swift
index f36817c240..a582f558a9 100644
--- a/Modules/ContentKit/Sources/Exercise/Exercise+Interface.swift
+++ b/Modules/ContentKit/Sources/Exercise/Exercise+Interface.swift
@@ -17,6 +17,7 @@ extension Exercise {
         case remoteStandard
         case remoteArrow
         case hideAndSeek
+        case musicalInstruments
     }
 
 }
diff --git a/Modules/ContentKit/Sources/Exercise/Exercise+Payload.swift b/Modules/ContentKit/Sources/Exercise/Exercise+Payload.swift
index 1a726f57c0..114c191c47 100644
--- a/Modules/ContentKit/Sources/Exercise/Exercise+Payload.swift
+++ b/Modules/ContentKit/Sources/Exercise/Exercise+Payload.swift
@@ -11,3 +11,4 @@ extension DragAndDropIntoZones.Payload: ExercisePayloadProtocol {}
 extension DragAndDropToAssociate.Payload: ExercisePayloadProtocol {}
 extension AudioRecordingPlayer.Payload: ExercisePayloadProtocol {}
 extension HideAndSeek.Payload: ExercisePayloadProtocol {}
+extension MusicalInstrument.Payload: ExercisePayloadProtocol {}
diff --git a/Modules/ContentKit/Sources/Exercise/Exercise.swift b/Modules/ContentKit/Sources/Exercise/Exercise.swift
index 7185d2bb9a..21776141a4 100644
--- a/Modules/ContentKit/Sources/Exercise/Exercise.swift
+++ b/Modules/ContentKit/Sources/Exercise/Exercise.swift
@@ -46,6 +46,9 @@ public struct Exercise: Codable {
             case (.hideAndSeek, .none):
                 payload = try container.decode(HideAndSeek.Payload.self, forKey: .payload)
 
+            case (.musicalInstruments, .none):
+                payload = try container.decode(MusicalInstrument.Payload.self, forKey: .payload)
+
             case (.remoteStandard, .none),
                 (.remoteArrow, .none):
                 payload = nil
diff --git a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyGameplay.swift b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyGameplay.swift
index 9a82766672..afea638e82 100644
--- a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyGameplay.swift
+++ b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyGameplay.swift
@@ -4,13 +4,14 @@
 
 import AudioKit
 import Combine
+import ContentKit
 import SwiftUI
 
 public class MelodyGameplay: ObservableObject {
     @Published public var progress: CGFloat = 0.0
     @Published var state: ExerciseState = .idle
 
-    private let xyloPlayer = MIDIPlayer(name: "Xylophone", samples: xyloSamples)
+    private let xyloPlayer = MIDIPlayer(instrument: .xylophone)
 
     private let song: MelodySongModel
 
@@ -68,6 +69,6 @@ public class MelodyGameplay: ObservableObject {
         let index = kListOfTiles.firstIndex(where: {
             $0.noteNumber == currentNoteNumber
         })
-        return kListOfTiles[index!].color
+        return kListOfTiles[index!].color.screen
     }
 }
diff --git a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyView.swift b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyView.swift
index fd7ff0be61..463c3beda2 100644
--- a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyView.swift
+++ b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyView.swift
@@ -2,9 +2,16 @@
 // Copyright 2023 APF France handicap
 // SPDX-License-Identifier: Apache-2.0
 
-import DesignKit
+import AudioKit
+import RobotKit
 import SwiftUI
 
+public struct XylophoneTile: Identifiable {
+    public var id: Int
+    var noteNumber: MIDINoteNumber
+    var color: Robot.Color
+}
+
 public let kListOfTiles: [XylophoneTile] = [
     XylophoneTile(id: 0, noteNumber: 24, color: .pink),
     XylophoneTile(id: 1, noteNumber: 26, color: .red),
@@ -19,7 +26,7 @@ public struct MelodyView: View {
     @ObservedObject private var viewModel: MelodyViewModel
 
     let defaultTilesSpacing: CGFloat = 16
-    let tilesNumber = 7
+    let tileNumber = 7
 
     public init(gameplay: MelodyGameplay) {
         self.viewModel = MelodyViewModel(gameplay: gameplay)
@@ -36,9 +43,11 @@ public struct MelodyView: View {
                     Button {
                         viewModel.onTileTapped(tile: tile)
                     } label: {
-                        tile.color
+                        tile.color.screen
                     }
-                    .buttonStyle(XylophoneTileButtonStyle(index: tile.id, tilesNumber: tilesNumber))
+                    .buttonStyle(
+                        MusicalInstrumentView.XylophoneView.TileButtonStyle(index: tile.id, tileNumber: tileNumber)
+                    )
                     .compositingGroup()
                 }
             }
diff --git a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyViewModel.swift b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyViewModel.swift
index b0f9ad5920..68adf1bbbe 100644
--- a/Modules/GameEngineKit/Sources/Staging/Melody/MelodyViewModel.swift
+++ b/Modules/GameEngineKit/Sources/Staging/Melody/MelodyViewModel.swift
@@ -9,7 +9,7 @@ public class MelodyViewModel: Identifiable, ObservableObject {
     public var gameplay: MelodyGameplay
 
     @Published public var progress: CGFloat
-    @Published  var state: ExerciseState
+    @Published var state: ExerciseState
 
     private var cancellables: Set<AnyCancellable> = []
 
diff --git a/Modules/GameEngineKit/Sources/Staging/Xylophone/XylophoneView.swift b/Modules/GameEngineKit/Sources/Staging/Xylophone/XylophoneView.swift
deleted file mode 100644
index a7c77bea4e..0000000000
--- a/Modules/GameEngineKit/Sources/Staging/Xylophone/XylophoneView.swift
+++ /dev/null
@@ -1,56 +0,0 @@
-// Leka - iOS Monorepo
-// Copyright 2023 APF France handicap
-// SPDX-License-Identifier: Apache-2.0
-
-import AudioKit
-import DesignKit
-import SwiftUI
-
-public struct XylophoneTile: Identifiable, Hashable {
-    public var id: Int
-    var noteNumber: MIDINoteNumber
-    var color: Color
-}
-
-let kListOfXylophoneTiles: [XylophoneTile] = [
-    XylophoneTile(id: 0, noteNumber: 24, color: .green),
-    XylophoneTile(id: 1, noteNumber: 26, color: .purple),
-    XylophoneTile(id: 2, noteNumber: 28, color: .red),
-    XylophoneTile(id: 3, noteNumber: 29, color: .yellow),
-    XylophoneTile(id: 4, noteNumber: 31, color: .blue),
-]
-
-public struct XylophoneView: View {
-    @StateObject var xyloPlayer = MIDIPlayer(name: "Xylophone", samples: xyloSamples)
-    let defaultTilesSpacing: CGFloat = 40
-    let tilesNumber = kListOfXylophoneTiles.count
-
-    public init() {
-        // Nothing to do
-    }
-
-    public var body: some View {
-        HStack(spacing: defaultTilesSpacing) {
-            ForEach(kListOfXylophoneTiles) { tile in
-                Button {
-                    xyloPlayer.noteOn(number: tile.noteNumber)
-                    // TODO(@ladislas): Light on Leka lights with tile.color
-                    print("Leka is \(tile.color)")
-                } label: {
-                    tile.color
-                }
-                .buttonStyle(XylophoneTileButtonStyle(index: tile.id, tilesNumber: tilesNumber))
-                .compositingGroup()
-            }
-        }
-    }
-}
-
-struct XylophoneView_Previews:
-    PreviewProvider
-{
-    static var previews: some View {
-        XylophoneView()
-            .previewInterfaceOrientation(.landscapeLeft)
-    }
-}
diff --git a/Modules/GameEngineKit/Sources/Staging/XylophoneTile.swift b/Modules/GameEngineKit/Sources/Staging/XylophoneTile.swift
deleted file mode 100644
index 00c7a69207..0000000000
--- a/Modules/GameEngineKit/Sources/Staging/XylophoneTile.swift
+++ /dev/null
@@ -1,80 +0,0 @@
-// Leka - iOS Monorepo
-// Copyright 2023 APF France handicap
-// SPDX-License-Identifier: Apache-2.0
-
-import DesignKit
-import SwiftUI
-
-struct XylophoneTileButtonStyle: ButtonStyle {
-    let xyloAttachColor = Color(red: 0.87, green: 0.65, blue: 0.54)
-    let defaultMaxTileHeight: Int = 500
-    let defaultTileHeightGap: Int = 250
-    let defaultTileWidth: CGFloat = 130
-    let defaultTilesScaleFeedback: CGFloat = 0.98
-    let defaultTilesRotationFeedback: CGFloat = -1
-
-    let index: Int
-    let tilesNumber: Int
-
-    func makeBody(configuration: Self.Configuration) -> some View {
-        configuration.label
-            .overlay {
-                VStack {
-                    Spacer()
-                    Circle()
-                        .fill(xyloAttachColor)
-                        .shadow(
-                            color: .black.opacity(0.4),
-                            radius: 3, x: 0, y: 3
-                        )
-                    Spacer()
-                    Circle()
-                        .fill(xyloAttachColor)
-                        .shadow(
-                            color: .black.opacity(0.4),
-                            radius: 3, x: 0, y: 3
-                        )
-                    Spacer()
-                }
-                .frame(width: 44)
-            }
-            .overlay {
-                RoundedRectangle(cornerRadius: 7, style: .circular)
-                    .stroke(.black.opacity(configuration.isPressed ? 0.3 : 0), lineWidth: 20)
-            }
-            .clipShape(RoundedRectangle(cornerRadius: 7, style: .circular))
-            .frame(width: defaultTileWidth, height: setSizeFromIndex())
-            .scaleEffect(
-                configuration.isPressed ? defaultTilesScaleFeedback : 1,
-                anchor: .center
-            )
-            .rotationEffect(
-                Angle(degrees: configuration.isPressed ? defaultTilesRotationFeedback : 0),
-                anchor: .center
-            )
-            .shadow(
-                color: .black.opacity(0.4),
-                radius: 3, x: 0, y: 3
-            )
-    }
-
-    private func setSizeFromIndex() -> CGFloat {
-        let sizeDiff = defaultTileHeightGap / tilesNumber
-        let tileHeight = defaultMaxTileHeight - index * sizeDiff
-
-        return CGFloat(tileHeight)
-    }
-}
-
-struct XylophoneTileButtonStyle_Previews:
-    PreviewProvider
-{
-    static var previews: some View {
-        Button {
-            // Nothing to do
-        } label: {
-            Color(.red)
-        }
-        .buttonStyle(XylophoneTileButtonStyle(index: 0, tilesNumber: 1))
-    }
-}
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView+TileButtonStyle.swift b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView+TileButtonStyle.swift
new file mode 100644
index 0000000000..10fa66721a
--- /dev/null
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView+TileButtonStyle.swift
@@ -0,0 +1,82 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+import AudioKit
+import DesignKit
+import RobotKit
+import SwiftUI
+
+extension MusicalInstrumentView.XylophoneView {
+
+    struct TileButtonStyle: ButtonStyle {
+        let xyloAttachColor = Color(red: 0.87, green: 0.65, blue: 0.54)
+        let defaultMaxTileHeight: Int = 500
+        let defaultTileHeightGap: Int = 250
+        let defaultTileWidth: CGFloat = 130
+        let defaultTilesScaleFeedback: CGFloat = 0.98
+        let defaultTilesRotationFeedback: CGFloat = -1
+
+        let index: Int
+        let tileNumber: Int
+
+        func makeBody(configuration: Self.Configuration) -> some View {
+            configuration.label
+                .overlay {
+                    VStack {
+                        Spacer()
+                        Circle()
+                            .fill(xyloAttachColor)
+                            .shadow(
+                                color: .black.opacity(0.4),
+                                radius: 3, x: 0, y: 3
+                            )
+                        Spacer()
+                        Circle()
+                            .fill(xyloAttachColor)
+                            .shadow(
+                                color: .black.opacity(0.4),
+                                radius: 3, x: 0, y: 3
+                            )
+                        Spacer()
+                    }
+                    .frame(width: 44)
+                }
+                .overlay {
+                    RoundedRectangle(cornerRadius: 7, style: .circular)
+                        .stroke(.black.opacity(configuration.isPressed ? 0.3 : 0), lineWidth: 20)
+                }
+                .clipShape(RoundedRectangle(cornerRadius: 7, style: .circular))
+                .frame(width: defaultTileWidth, height: setSizeFromIndex())
+                .scaleEffect(
+                    configuration.isPressed ? defaultTilesScaleFeedback : 1,
+                    anchor: .center
+                )
+                .rotationEffect(
+                    Angle(degrees: configuration.isPressed ? defaultTilesRotationFeedback : 0),
+                    anchor: .center
+                )
+                .shadow(
+                    color: .black.opacity(0.4),
+                    radius: 3, x: 0, y: 3
+                )
+        }
+
+        private func setSizeFromIndex() -> CGFloat {
+            let sizeDiff = defaultTileHeightGap / tileNumber
+            let tileHeight = defaultMaxTileHeight - index * sizeDiff
+
+            return CGFloat(tileHeight)
+        }
+    }
+
+}
+
+#Preview {
+    Button {
+        // Nothing to do
+    } label: {
+        Color(.red)
+    }
+    .buttonStyle(MusicalInstrumentView.XylophoneView.TileButtonStyle(index: 0, tileNumber: 1))
+}
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView.swift b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView.swift
new file mode 100644
index 0000000000..1cdd72d76c
--- /dev/null
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView+XylophoneView.swift
@@ -0,0 +1,48 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+import AudioKit
+import RobotKit
+import SwiftUI
+
+extension MusicalInstrumentView {
+
+    struct XylophoneView: View {
+        @ObservedObject var xyloPlayer: MIDIPlayer
+        let tilesSpacing: CGFloat
+        let tileNumber: Int
+        let tileColors: [Robot.Color] = [.pink, .red, .orange, .yellow, .green, .blue, .purple]
+        let scale: MIDIScale
+
+        init(midiPlayer: MIDIPlayer, scale: MIDIScale) {
+            self.xyloPlayer = midiPlayer
+            self.scale = scale
+            self.tileNumber = scale.notes.count
+            self.tilesSpacing = scale.self == .majorPentatonic ? 40 : 16
+        }
+
+        var body: some View {
+            HStack(spacing: tilesSpacing) {
+                ForEach(0..<tileNumber) { index in
+                    Button {
+                        xyloPlayer.noteOn(number: scale.notes[index])
+                        Robot.shared.shine(.all(in: tileColors[index]))
+                    } label: {
+                        tileColors[index].screen
+                    }
+                    .buttonStyle(TileButtonStyle(index: index, tileNumber: tileNumber))
+                    .compositingGroup()
+                }
+            }
+        }
+    }
+
+}
+
+#Preview {
+    MusicalInstrumentView.XylophoneView(
+        midiPlayer: MIDIPlayer(instrument: .xylophone),
+        scale: .majorPentatonic
+    )
+}
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView.swift b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView.swift
new file mode 100644
index 0000000000..20d7260e3a
--- /dev/null
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Exercises/Specialized/Instrument/MusicalInstrumentView.swift
@@ -0,0 +1,46 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+import AudioKit
+import ContentKit
+import SwiftUI
+
+struct MusicalInstrumentView: View {
+    @StateObject var midiPlayer: MIDIPlayer
+    let instrument: MIDIInstrument
+    let scale: MIDIScale
+
+    init(instrument: MIDIInstrument, scale: MIDIScale) {
+        self.instrument = instrument
+        self.scale = scale
+        self._midiPlayer = StateObject(wrappedValue: MIDIPlayer(instrument: instrument))
+    }
+
+    init(exercise: Exercise, data: ExerciseSharedData? = nil) {
+        guard let payload = exercise.payload as? MusicalInstrument.Payload else {
+            fatalError("Exercise payload is not .instrument")
+        }
+
+        guard let instrument = MIDIInstrument(rawValue: payload.instrument),
+            let scale = MIDIScale(rawValue: payload.scale)
+        else {
+            fatalError("Instrument or scale not found")
+        }
+
+        self.instrument = instrument
+        self.scale = scale
+        self._midiPlayer = StateObject(wrappedValue: MIDIPlayer(instrument: instrument))
+    }
+
+    var body: some View {
+        switch instrument {
+            case .xylophone:
+                XylophoneView(midiPlayer: midiPlayer, scale: scale)
+        }
+    }
+}
+
+#Preview {
+    MusicalInstrumentView(instrument: .xylophone, scale: .majorPentatonic)
+}
diff --git a/Modules/GameEngineKit/Sources/Staging/MIDISample.swift b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIInstrument.swift
similarity index 74%
rename from Modules/GameEngineKit/Sources/Staging/MIDISample.swift
rename to Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIInstrument.swift
index 8aa87989b5..3939b0cce8 100644
--- a/Modules/GameEngineKit/Sources/Staging/MIDISample.swift
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIInstrument.swift
@@ -2,29 +2,20 @@
 // Copyright 2023 APF France handicap
 // SPDX-License-Identifier: Apache-2.0
 
-import AVFAudio
 import AudioKit
-import SwiftUI
 
-struct MIDISample {
-    var fileName: String
-    var midiNote: Int
-    var audioFile: AVAudioFile?
+enum MIDIInstrument: String {
+    case xylophone
 
-    init(file: String, note: Int) {
-        fileName = file
-        midiNote = note
-
-        guard let fileURL = Bundle.module.resourceURL?.appendingPathComponent(file) else { return }
-        do {
-            audioFile = try AVAudioFile(forReading: fileURL)
-        } catch {
-            Log("Could not load: \(fileName)")
+    var samples: [MIDISample] {
+        switch self {
+            case .xylophone:
+                xyloSamples
         }
     }
 }
 
-let xyloSamples: [MIDISample] =
+private let xyloSamples: [MIDISample] =
     [
         MIDISample(file: "Xylo-24-C1.wav", note: 24),
         MIDISample(file: "Xylo-25-C#1.wav", note: 25),
diff --git a/Modules/GameEngineKit/Sources/Staging/MIDIPlayer.swift b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIPlayer.swift
similarity index 92%
rename from Modules/GameEngineKit/Sources/Staging/MIDIPlayer.swift
rename to Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIPlayer.swift
index a02fb85074..33e996a22b 100644
--- a/Modules/GameEngineKit/Sources/Staging/MIDIPlayer.swift
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIPlayer.swift
@@ -4,22 +4,19 @@
 
 import AVFAudio
 import AudioKit
+import ContentKit
 import SwiftUI
 
 class MIDIPlayer: ObservableObject {
-    public let name: String
-
     private let engine = AudioEngine()
     private let sampler = MIDISampler()
     private let sequencer = AppleSequencer()
     private let instrument = MIDICallbackInstrument()
 
-    init(name: String, samples: [MIDISample]) {
-        self.name = name
-
+    init(instrument: MIDIInstrument) {
         engine.output = sampler
 
-        loadInstrument(samples: samples)
+        loadInstrument(samples: instrument.samples)
         startAudioEngine()
     }
 
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDISample.swift b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDISample.swift
new file mode 100644
index 0000000000..22e26f71ea
--- /dev/null
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDISample.swift
@@ -0,0 +1,24 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+import AVFAudio
+import SwiftUI
+
+struct MIDISample {
+    var fileName: String
+    var midiNote: Int
+    var audioFile: AVAudioFile?
+
+    init(file: String, note: Int) {
+        fileName = file
+        midiNote = note
+
+        guard let fileURL = Bundle.module.resourceURL?.appendingPathComponent(file) else { return }
+        do {
+            audioFile = try AVAudioFile(forReading: fileURL)
+        } catch {
+            fatalError("Could not load: \(fileName)")
+        }
+    }
+}
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIScale.swift b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIScale.swift
new file mode 100644
index 0000000000..1ef57ea4ce
--- /dev/null
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Utils/MIDIScale.swift
@@ -0,0 +1,19 @@
+// Leka - iOS Monorepo
+// Copyright 2023 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+import AudioKit
+
+enum MIDIScale: String {
+    case majorPentatonic
+    case majorHeptatonic
+
+    var notes: [MIDINoteNumber] {
+        switch self {
+            case .majorPentatonic:
+                return [24, 26, 28, 31, 33]
+            case .majorHeptatonic:
+                return [24, 26, 28, 29, 31, 33, 35]
+        }
+    }
+}
diff --git a/Modules/GameEngineKit/Sources/_NewSystem/Views/Activity/ActivityView.swift b/Modules/GameEngineKit/Sources/_NewSystem/Views/Activity/ActivityView.swift
index 2d71af3999..2094c76d6b 100644
--- a/Modules/GameEngineKit/Sources/_NewSystem/Views/Activity/ActivityView.swift
+++ b/Modules/GameEngineKit/Sources/_NewSystem/Views/Activity/ActivityView.swift
@@ -123,6 +123,12 @@ public struct ActivityView: View {
                     exercise: viewModel.currentExercise,
                     data: viewModel.currentExerciseSharedData
                 )
+
+            case .musicalInstruments:
+                MusicalInstrumentView(
+                    exercise: viewModel.currentExercise,
+                    data: viewModel.currentExerciseSharedData
+                )
         }
     }