Create app.py

app.py

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+import streamlit as st
+import mido
+from mido import Message, MidiFile, MidiTrack
+
+st.title("7 Chords MIDI Player")
+
+# Define the chords
+C = [60, 64, 67]
+D = [62, 65, 69]
+E = [64, 68, 71]
+F = [65, 69, 72]
+G = [67, 71, 74]
+A = [69, 73, 76]
+B = [71, 75, 78]
+
+# Create a MIDI file and track
+mid = MidiFile()
+track = MidiTrack()
+mid.tracks.append(track)
+
+# Function to play a chord
+def play_chord(chord, velocity=64, duration=1):
+    for note in chord:
+        track.append(Message('note_on', note=note, velocity=velocity, time=0))
+        track.append(Message('note_off', note=note, velocity=0, time=duration))
+
+# Main function that plays the 7 chords
+def main():
+    st.header("Select a chord to play")
+    chord = st.selectbox("", ["C", "D", "E", "F", "G", "A", "B"])
+    if chord == "C":
+        play_chord(C)
+    elif chord == "D":
+        play_chord(D)
+    elif chord == "E":
+        play_chord(E)
+    elif chord == "F":
+        play_chord(F)
+    elif chord == "G":
+        play_chord(G)
+    elif chord == "A":
+        play_chord(A)
+    elif chord == "B":
+        play_chord(B)
+    mid.save("chord.mid")
+    st.header("Now playing...")
+
+if __name__ == '__main__':
+    main()