small fix on str repr

example.py

@@ -1,16 +1,17 @@
-from midigen.note import Note
-from midigen.key import KEY_MAP
-from midigen.chord import Chord, ChordProgression
 from midigen.midigen import MidiGen
-midi_gen = MidiGen()
+from midigen.note import Note
+from midigen.chord import Chord
+from midigen.key import Key, KEY_MAP
 
-dm9 = Chord([Note(pitch, 64, 480, 0) for pitch in [62, 65, 69, 74, 77]])
-g7 = Chord([Note(pitch, 64, 480, 0) for pitch in [67, 71, 74, 77]])
-cm9 = Chord([Note(pitch, 64, 480, 0) for pitch in [60, 64, 67, 72, 74]])
+midi_gen = MidiGen(tempo=120, time_signature=(4, 4), key_signature=Key("C"))
 
-chord_progression = ChordProgression([dm9, g7, cm9])
+note_c = Note(pitch=KEY_MAP["C"], velocity=64, duration=480, time=0)
+note_e = Note(pitch=KEY_MAP["E"], velocity=64, duration=480, time=0)
+note_g = Note(pitch=KEY_MAP["G"], velocity=64, duration=480, time=0)
 
-midi_gen.add_chord_progression(chord_progression)
-print(midi_gen)
-midi_gen.save("rnb_progression.mid")
+c_major_chord = Chord([note_c, note_e, note_g])
 
+track = midi_gen.get_active_track()
+track.add_chord(c_major_chord)
+print(midi_gen)
+midi_gen.save("example.mid")

midigen/midigen.py

@@ -41,7 +41,7 @@ def __str__(self):
         :return: A string with the track, tempo, time signature, and key signature of the MidiGen object.
         """
         return (
-            f"Track: {self.track}\nTempo: {self.tempo}\n \
+            f"Track: {self.tracks}\nTempo: {self.tempo}\n \
             Time Signature: {self.time_signature}\nKey Signature: {self.key_signature}"
         )
 

midigen/track.py

@@ -125,9 +125,6 @@ def add_chord(self, chord: Chord) -> None:
         Add a chord (simultaneous notes) to the track.
 
         :param chord: A Chord object.
-        :param velocity: The velocity of the notes.
-        :param duration: The duration of the notes.
-        :param time: Optional, the time to schedule the chord.
         """
         for note in chord.get_chord():
             self.add_note(note)