from time import sleep
from MidiInterface import *
inter = MidiInterface()
inter.play_track(1)
for x in range(120, 200):
inter.set_tempo(x)
sleep(.1)
for x in range(200, 120, -1):
inter.set_tempo(x)
sleep(.1)
for x in range(127, 0, -1):
inter.vol_track(1, x)
sleep(.1)
for x in range(0, 127):
inter.vol_track(1, x)
sleep(.1)
inter.stop_track(1)
