Compose a 4-bar piece that follows the Cmaj7_Am7_Fmaj7_G7_Am:
PIECE_START TIME_SIGNATURE=4_4 GENRE=OTHER KEY=C BPM=123 CP=Cmaj7_Am7_Fmaj7_G7_Am BARLENGTH=4 INSTLIST=0_81_24_30_57_32_53_68
PIECE_START TIME_SIGNATURE=4_4 GENRE=OTHER KEY=C BPM=123 CP=Cmaj7_Am7_Fmaj7_G7_Am BARLENGTH=4 INSTLIST=0_81_24_30_57_32_53_68 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=2 BAR_START TIME_DELTA=2.0 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=55 TIME_DELTA=1.0 NOTE_OFF=55 NOTE_ON=60 TIME_DELTA=5.0 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=57 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 TIME_DELTA=1.0 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 TIME_DELTA=1.0 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 TIME_DELTA=1.0 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 TIME_DELTA=1.0 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=57 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_ON=57 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_ON=55 TIME_DELTA=1.0 NOTE_OFF=55 NOTE_ON=57 TIME_DELTA=10.0 NOTE_OFF=57 BAR_END TRACK_END TRACK_START INST=24 DENSITY=0 BAR_START BAR_END TRACK_END TRACK_START INST=30 DENSITY=4 BAR_START TIME_DELTA=2.0 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=55 TIME_DELTA=1.0 NOTE_OFF=55 NOTE_ON=60 NOTE_ON=60 NOTE_ON=52 NOTE_ON=43 NOTE_ON=48 NOTE_ON=55 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=52 NOTE_OFF=43 NOTE_OFF=48 NOTE_OFF=55 TIME_DELTA=1.0 NOTE_ON=59 NOTE_ON=43 NOTE_ON=52 NOTE_ON=55 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_OFF=43 NOTE_OFF=52 NOTE_OFF=55 TIME_DELTA=1.0 NOTE_ON=64 NOTE_ON=45 NOTE_ON=55 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=64 NOTE_OFF=45 NOTE_OFF=55 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 NOTE_ON=64 NOTE_ON=45 NOTE_ON=55 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=57 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=64 NOTE_OFF=45 NOTE_OFF=55 NOTE_OFF=60 NOTE_OFF=59 NOTE_ON=60 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=60 TIME_DELTA=1.0 NOTE_ON=62 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=62 NOTE_OFF=59 TIME_DELTA=1.0 NOTE_ON=60 NOTE_ON=53 NOTE_ON=69 NOTE_ON=65 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=53 NOTE_OFF=69 NOTE_OFF=65 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 NOTE_ON=53 NOTE_ON=69 NOTE_ON=65 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=2.0 NOTE_OFF=53 NOTE_OFF=69 NOTE_OFF=65 NOTE_OFF=60 NOTE_OFF=59 NOTE_ON=60 NOTE_ON=53 NOTE_ON=60 NOTE_ON=65 TIME_DELTA=1.0 NOTE_OFF=53 NOTE_OFF=60 NOTE_OFF=65 NOTE_ON=53 NOTE_ON=60 NOTE_ON=65 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=53 NOTE_OFF=60 NOTE_OFF=65 NOTE_ON=59 NOTE_ON=65 NOTE_ON=60 NOTE_ON=53 TIME_DELTA=1.0 NOTE_OFF=65 NOTE_OFF=60 NOTE_OFF=53 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_OFF=62 NOTE_ON=60 NOTE_ON=53 NOTE_ON=69 NOTE_ON=65 NOTE_ON=60 TIME_DELTA=2.0 NOTE_OFF=60 NOTE_ON=59 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=60 TIME_DELTA=1.0 NOTE_ON=62 TIME_DELTA=1.0 NOTE_OFF=62 TIME_DELTA=1.0 NOTE_ON=60 TIME_DELTA=1.0 NOTE_OFF=53 NOTE_OFF=69 NOTE_OFF=65 NOTE_OFF=60 NOTE_OFF=60 BAR_END BAR_START NOTE_ON=60 NOTE_ON=48 TIME_DELTA=1.0 NOTE_OFF=48 NOTE_ON=48 TIME_DELTA=1.0 NOTE_OFF=60 NOTE_OFF=48 NOTE_ON=59 NOTE_ON=47 TIME_DELTA=1.0 NOTE_OFF=59 NOTE_OFF=47 NOTE_ON=57 NOTE_ON=45 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_OFF=45 NOTE_ON=57 NOTE_ON=45 TIME_DELTA=1.0 NOTE_OFF=57 NOTE_OFF=45 NOTE_ON=55 NOTE_ON=43 TIME_DELTA=1.0 NOTE_OFF=55 NOTE_OFF=43 NOTE_ON=57 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_ON=57 NOTE_ON=64 NOTE_ON=59 TIME_DELTA=8.0 NOTE_OFF=57 NOTE_OFF=52 NOTE_OFF=45 NOTE_OFF=57 NOTE_OFF=64 NOTE_OFF=59 BAR_END TRACK_END TRACK_START INST=57 DENSITY=2 BAR_START TIME_DELTA=5.0 NOTE_ON=79 TIME_DELTA=3.0 NOTE_OFF=79 NOTE_ON=79 TIME_DELTA=1.0 NOTE_OFF=79 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=79 TIME_DELTA=2.0 NOTE_OFF=79 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=79 TIME_DELTA=1.0 NOTE_OFF=79 BAR_END BAR_START NOTE_ON=79 TIME_DELTA=4.0 NOTE_OFF=79 TIME_DELTA=5.0 NOTE_ON=81 TIME_DELTA=3.0 NOTE_OFF=81 NOTE_ON=74 TIME_DELTA=1.0 NOTE_OFF=74 NOTE_ON=72 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_ON=76 NOTE_ON=79 TIME_DELTA=1.0 NOTE_OFF=76 NOTE_OFF=79 BAR_END BAR_START NOTE_ON=76 NOTE_ON=79 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_OFF=79 NOTE_ON=77 NOTE_ON=74 TIME_DELTA=1.0 NOTE_OFF=77 NOTE_OFF=74 NOTE_ON=76 NOTE_ON=72 TIME_DELTA=1.0 NOTE_OFF=76 NOTE_OFF=72 TIME_DELTA=2.0 NOTE_ON=72 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=76 NOTE_ON=74 NOTE_ON=77 TIME_DELTA=3.0 NOTE_OFF=74 NOTE_OFF=77 NOTE_ON=76 NOTE_ON=79 TIME_DELTA=3.0 NOTE_OFF=76 NOTE_OFF=79 NOTE_ON=79 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=79 NOTE_OFF=76 BAR_END BAR_START NOTE_ON=79 NOTE_ON=76 TIME_DELTA=1.0 NOTE_OFF=79 NOTE_OFF=76 BAR_END TRACK_END TRACK_START INST=32 DENSITY=4 BAR_START NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=36 TIME_DELTA=1.0 NOTE_OFF=36 NOTE_ON=35 TIME_DELTA=1.0 NOTE_OFF=35 NOTE_ON=35 TIME_DELTA=1.0 NOTE_OFF=35 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 BAR_END BAR_START NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=33 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 BAR_END BAR_START NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=29 TIME_DELTA=1.0 NOTE_OFF=29 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 NOTE_ON=31 TIME_DELTA=1.0 NOTE_OFF=31 BAR_END BAR_START NOTE_ON=21 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=21 NOTE_OFF=33 NOTE_ON=21 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=21 NOTE_OFF=33 NOTE_ON=21 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=21 NOTE_OFF=33 NOTE_ON=21 NOTE_ON=33 TIME_DELTA=1.0 NOTE_OFF=21 NOTE_OFF=33 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 NOTE_ON=33 NOTE_ON=21 TIME_DELTA=0.5 NOTE_OFF=33 TIME_DELTA=0.5 NOTE_OFF=21 BAR_END TRACK_END TRACK_START INST=53 DENSITY=0 BAR_START BAR_END TRACK_END TRACK_START INST=68 DENSITY=2 BAR_START TIME_DELTA=5.166666666666667 NOTE_ON=79 TIME_DELTA=3.0 NOTE_ON=79 TIME_DELTA=1.7763568394002505e-15 NOTE_OFF=79 TIME_DELTA=0.9999999999999982 NOTE_OFF=79 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=79 TIME_DELTA=2.0 NOTE_OFF=79 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=79 TIME_DELTA=0.8333333333333334 NOTE_OFF=79 BAR_END BAR_START NOTE_ON=79 TIME_DELTA=4.166666666666667 NOTE_OFF=79 TIME_DELTA=4.999999999999999 NOTE_ON=81 TIME_DELTA=3.0 NOTE_OFF=81 NOTE_ON=74 TIME_DELTA=1.0 NOTE_OFF=74 NOTE_ON=72 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_ON=76 NOTE_ON=79 TIME_DELTA=0.8333333333333334 NOTE_OFF=76 NOTE_OFF=79 BAR_END BAR_START NOTE_ON=76 NOTE_ON=79 TIME_DELTA=2.1666666666666665 NOTE_OFF=76 NOTE_OFF=79 NOTE_ON=77 NOTE_ON=74 TIME_DELTA=1.0 NOTE_OFF=77 NOTE_OFF=74 NOTE_ON=76 NOTE_ON=72 TIME_DELTA=0.9999999999999996 NOTE_OFF=76 NOTE_OFF=72 TIME_DELTA=2.000000000000001 NOTE_ON=72 NOTE_ON=76 TIME_DELTA=2.0 NOTE_ON=74 NOTE_ON=77 TIME_DELTA=1.7763568394002505e-15 NOTE_OFF=72 NOTE_OFF=76 TIME_DELTA=2.9999999999999982 NOTE_OFF=74 NOTE_OFF=77 NOTE_ON=76 NOTE_ON=79 TIME_DELTA=3.0 NOTE_OFF=76 NOTE_OFF=79 NOTE_ON=79 NOTE_ON=76 TIME_DELTA=1.8333333333333333 NOTE_OFF=79 NOTE_OFF=76 BAR_END BAR_START NOTE_ON=79 NOTE_ON=76 TIME_DELTA=1.1666666666666667 NOTE_OFF=79 NOTE_OFF=76 BAR_END TRACK_END PIECE_END