Add a 4-bar ROCK GUNSHOT track in the following composition:
PIECE_START TIME_SIGNATURE=4_4 GENRE=ROCK KEY=G BPM=144 CP=G_C_A_G_Am7b5 BARLENGTH=4 INSTLIST=29_73_53_81_24_0_34_0_53 TRACK_START INST=24 DENSITY=0 BAR_START BAR_END TRACK_END TRACK_START INST=0 DENSITY=0 BAR_START BAR_END BAR_START BAR_END BAR_START BAR_END BAR_START BAR_END TRACK_END TRACK_START INST=81 DENSITY=1 BAR_START NOTE_ON=67 TIME_DELTA=16.0 NOTE_OFF=67 BAR_END BAR_START NOTE_ON=67 TIME_DELTA=8.0 NOTE_OFF=67 TIME_DELTA=5.0 NOTE_ON=64 TIME_DELTA=1.0 NOTE_OFF=64 NOTE_ON=64 TIME_DELTA=1.0 NOTE_OFF=64 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 BAR_END BAR_START NOTE_ON=64 TIME_DELTA=2.0 NOTE_OFF=64 NOTE_ON=69 TIME_DELTA=1.0 NOTE_OFF=69 NOTE_ON=69 TIME_DELTA=2.0 NOTE_OFF=69 TIME_DELTA=8.0 NOTE_ON=64 TIME_DELTA=1.0 NOTE_OFF=64 NOTE_ON=64 TIME_DELTA=1.0 NOTE_OFF=64 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 BAR_END BAR_START NOTE_ON=64 TIME_DELTA=2.0 NOTE_OFF=64 NOTE_ON=67 TIME_DELTA=1.0 NOTE_OFF=67 NOTE_ON=67 TIME_DELTA=2.0 NOTE_OFF=67 TIME_DELTA=9.0 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 BAR_END TRACK_END TRACK_START INST=53 DENSITY=0 BAR_START BAR_END TRACK_END PIECE_END
TRACK_START INST=0 DENSITY=3 BAR_START NOTE_ON=67 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=64 NOTE_ON=67 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=64 NOTE_ON=60 NOTE_ON=64 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_OFF=64 NOTE_ON=62 NOTE_ON=66 TIME_DELTA=2.0 NOTE_OFF=62 NOTE_OFF=66 TIME_DELTA=2.0 NOTE_ON=64 NOTE_ON=67 TIME_DELTA=2.0 NOTE_OFF=64 NOTE_OFF=67 BAR_END BAR_START NOTE_ON=64 NOTE_ON=67 TIME_DELTA=4.0 NOTE_OFF=64 NOTE_OFF=67 NOTE_ON=64 NOTE_ON=67 TIME_DELTA=4.0 NOTE_OFF=64 NOTE_OFF=67 NOTE_ON=67 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=64 NOTE_ON=67 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=64 BAR_END BAR_START NOTE_ON=69 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=69 NOTE_OFF=64 NOTE_ON=69 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=69 NOTE_OFF=64 NOTE_ON=64 NOTE_ON=69 TIME_DELTA=4.0 NOTE_OFF=64 NOTE_OFF=69 NOTE_ON=69 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=69 NOTE_OFF=64 BAR_END BAR_START NOTE_ON=67 NOTE_ON=62 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=62 NOTE_ON=67 NOTE_ON=62 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=62 NOTE_ON=67 NOTE_ON=62 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=62 NOTE_ON=67 NOTE_ON=62 TIME_DELTA=4.0 NOTE_OFF=67 NOTE_OFF=62 BAR_END TRACK_END