The piece of  making music by Python API, Earsketch. It is interesting.

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EarSketch helps you learn core topics in computer science, music, and music technology in a fun, engaging environment. You learn to code in Python or JavaScript, two of the most popular programming languages in the world, while manipulating loops, composing beats, and applying effects to a multi-track digital audio workstation. To learn more about EarSketch, visit http://earsketch.gatech.edu.

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This music was generated by the following code:

#		python code
#		script_name:Projecyt.py
#
#		author:Jeffrey Wang
#		description:Try to mix music

#
from earsketch import *
from random import *


init()
setTempo(120)


# assign track numbers
drumTracks = [1, 2, 3]
introTrack = 4
bassTrack = 5
melodyTrack = 6
sfxTrack = 7
endTrack = 8

def transition(startMeasure):
    # Inserts SFX to help transition. This is made as a function for code reusability.

    fitMedia(ELECTRO_SFX_WHITENOISE_SCATTER_001, sfxTrack, startMeasure, startMeasure + 2)

#------------#
# Intro      #
#------------#

fitMedia(RD_ELECTRO_SYNTHLEAD_10, introTrack, 1, 5)
fitMedia(RD_ELECTRO_SYNTHLEAD_3, introTrack, 5,6)


#------------#
# Transition #
#------------#

transition(6)

#-----------#
# A section #
#-----------#

drumsStartMeasure = 8
bassStartMeasure = 8

# build drums
drumAudio = [ELECTRO_DRUM_MAIN_LOOPPART_001, OS_CLOSEDHAT02, OS_SNARE04]
kickBeatString = "0-------0-------"
hatBeatString = "0-0-0-0-0-0-0-0-"
snareBeatString = "----0-------0---"

for i in range(8):  # put 8 measures of drums in with the beat strings above

    makeBeat(drumAudio[0], drumTracks[0], drumsStartMeasure + i, kickBeatString)
    makeBeat(drumAudio[1], drumTracks[1], drumsStartMeasure + i, hatBeatString)
    makeBeat(drumAudio[2], drumTracks[2], drumsStartMeasure + i, snareBeatString)

# build 8 measures of bass
bassAudio = [HIPHOP_FUNKBASS_001, HIPHOP_SYNTHBASS_001, HIPHOP_SYNTHBASS_002,
             RD_EDM_RAZORBASS_1] # these need a 0.125 offset to be on beat

fitMedia(bassAudio[0], bassTrack, bassStartMeasure, bassStartMeasure + 2)
fitMedia(bassAudio[1], bassTrack, bassStartMeasure + 2, bassStartMeasure + 4)
fitMedia(bassAudio[2], bassTrack, bassStartMeasure + 4, bassStartMeasure + 6)
fitMedia(bassAudio[3], bassTrack, bassStartMeasure + 6, bassStartMeasure + 8)

# build 8 measures of melody
# randomly choose from these for the melody
melodyAudio = [YG_ALT_POP_GUITAR_1, YG_ALT_POP_GUITAR_2, YG_ALT_POP_GUITAR_3,
               ELECTRO_ANALOGUE_LEAD_012]

melodyStartMeasure = 8

fitMedia(melodyAudio[1], melodyTrack, melodyStartMeasure, melodyStartMeasure + 4)
fitMedia(melodyAudio[0], melodyTrack, melodyStartMeasure + 4, melodyStartMeasure + 8)

#-----------#
# B section #
#-----------#

drumsStartMeasure = 16
bassStartMeasure = 16
melodyStartMeasure = 16

# build drums
drumAudio = [ELECTRO_DRUM_MAIN_LOOPPART_001, OS_CLOSEDHAT02, OS_SNARE04]
kickBeatString = "0-----0-0-------"
hatBeatString = "0-0-0-0-0-0-0-00"
snareBeatString = "----0-------0---"

for i in range(8):  # put 8 measures of drums in with the beat strings above

    makeBeat(drumAudio[0], drumTracks[0], drumsStartMeasure + i, kickBeatString)
    makeBeat(drumAudio[1], drumTracks[1], drumsStartMeasure + i, hatBeatString)
    makeBeat(drumAudio[2], drumTracks[2], drumsStartMeasure + i, snareBeatString)

# build 8 measures of bass
bassAudio = [HIPHOP_FUNKBASS_001, HIPHOP_SYNTHBASS_001, HIPHOP_SYNTHBASS_002,
             RD_EDM_RAZORBASS_1] # these need a 0.125 offset to be on beat

fitMedia(bassAudio[0], bassTrack, bassStartMeasure, bassStartMeasure + 2)
fitMedia(bassAudio[1], bassTrack, bassStartMeasure + 2, bassStartMeasure + 4)
fitMedia(bassAudio[0], bassTrack, bassStartMeasure + 4, bassStartMeasure + 6)
fitMedia(bassAudio[1], bassTrack, bassStartMeasure + 6, bassStartMeasure + 8)

# build 8 measures of melody
# randomly choose from these for the melody
melodyAudio = [YG_ALT_POP_GUITAR_1, YG_ALT_POP_GUITAR_2, YG_ALT_POP_GUITAR_3,
               ELECTRO_ANALOGUE_LEAD_012]


fitMedia(melodyAudio[1], melodyTrack, melodyStartMeasure, melodyStartMeasure + 4)
fitMedia(melodyAudio[3], melodyTrack, melodyStartMeasure + 4, melodyStartMeasure + 8)

#------------#
# End        #
#------------#

fitMedia(ELECTRO_SFX_WHITENOISE_SCATTER_007, endTrack, 24, 26)

#------------#
# Add Effect #
#------------#

# This effect adds some distortion to our signal. 

#setEffect(6, DISTORTION, DISTO_GAIN, 0, 0, 0, 0) # start with no distortion
#setEffect(6, DISTORTION, DISTO_GAIN, 0, 24, 20, 30) # start increasing distortion to melody at measure 24
setEffect(8, DISTORTION, DISTO_GAIN, 50,24,0,26 ) # shut it down in 1 measure


#---------#
# Finish  #
#---------#


finish()


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To load this track in EarSketch, visit https://earsketch.gatech.edu/earsketch2/#?sharing=xn0283NCaHRBzfWiU9YeDQ

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