如何使用Midiutil在一个时间点添加多个音符(或如何添加和弦)

from midiutil import MIDIFile

midi = MIDIFile(numTracks=1, adjust_origin=True)
midi.addTempo(track, time, tempo)

midi.addNote(track, channel, pitch, time, duration, volume)
midi.addChord(track, channel, time, duration, pitches, volume)

from midiutil import MIDIFile

# 创建一个MIDIFile对象
midi = MIDIFile(numTracks=1, adjust_origin=True)

# 设置基本参数
track = 0
time = 0
tempo = 120
midi.addTempo(track, time, tempo)

# 添加多个音符
notes = [(60, 0.5), (64, 0.5), (67, 0.5)]  # 音符和持续时间的列表
for note in notes:
    pitch, duration = note
    midi.addNote(track, channel=0, pitch=pitch, time=time, duration=duration, volume=100)
    time += duration

# 保存为MIDI文件
with open("output.mid", "wb") as output_file:
    midi.writeFile(output_file)