JFugue Jython Example 14. Create interactive musical programs using the RealtimePlayer.

This is Example 14 from JFugue website (JFugue Examples) in Jython.

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# JFugue 14. Play Music in Realtime

'''
Create interactive musical programs using the RealtimePlayer.
'''

import sys
sys.path.append("C:/jfugue-5.0.7.jar")

import random
from org.jfugue.pattern import Pattern
from org.jfugue.realtime import RealtimePlayer
from org.jfugue.theory import Note

player = RealtimePlayer()
quit = False

s = [None]*3
s[0]="Enter a '+C' to start a note,"
s[1]="'-C' to stop a note, 'i' for a random instrument,"
s[2]="'p' for a pattern, or 'q' to quit\n"
info = " ".join(s)

PATTERNS = [Pattern("Cmajq Dmajq Emajq"),
            Pattern("V0 Ei Gi Di Ci  V1 Gi Ci Fi Ei"),
            Pattern("V0 Cmajq V1 Gmajq")]

while quit == False:
    entry = raw_input(info)
    if entry.startswith("+"):
        player.startNote(Note(entry[1:]))
    elif entry.startswith("-"):
        player.stopNote(Note(entry[1:]))
    elif entry.lower()=="i":
        player.changeInstrument(random.randint(0,127))
    elif entry.lower()=="p":
        player.play(random.choice(PATTERNS))
    elif entry.lower()=="q":
        quit = True
        player.close()