I need a script to generate m midi file with some synthwave chords in progression

Certainly! Here's a Python script that uses the music21 library to generate a MIDI file with synthwave chords in a progression:

from music21 import *

# Create a Stream object to hold the chords
chord_stream = stream.Stream()

# Define the chord progression
chord_progression = ['Cmaj7', 'Dm7', 'Em7', 'Fmaj7', 'G7', 'Am7', 'Bø']

# Define the duration of each chord (in quarter notes)
chord_duration = 4

# Generate the chords and add them to the chord stream
for chord_name in chord_progression:
    chord = chord.Chord(chord_name)
    chord.duration = duration.Duration(chord_duration)
    chord_stream.append(chord)

# Create a MIDI file with the chord stream
midi_stream = midi.translate.streamToMidiFile(chord_stream)
midi_stream.open('synthwave_chords.mid', 'wb')
midi_stream.write()
midi_stream.close()

To run this script, you'll need to have the music21 library installed. You can install it using pip:

pip install music21

When you run the script, it will generate a MIDI file named "synthwave_chords.mid" in the same directory as the script. You can then import this MIDI file into your favorite music software or synthesizer to hear the synthwave chords in progression. Feel free to modify the chord_progression and chord_duration variables to customize the chords and their duration as desired