Compose a 4-bar piece that follows the A6_F_A6_F:
PIECE_START TIME_SIGNATURE=4_4 GENRE=OTHER KEY=F BPM=52 CP=A6_F_A6_F BARLENGTH=4 INSTLIST=63_53_29_0_0_66_35_26
PIECE_START TIME_SIGNATURE=4_4 GENRE=OTHER KEY=F BPM=52 CP=A6_F_A6_F BARLENGTH=4 INSTLIST=63_53_29_0_0_66_35_26 TRACK_START INST=63 DENSITY=2 BAR_START NOTE_ON=76 TIME_DELTA=4.0 NOTE_OFF=76 TIME_DELTA=6.0 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=64 NOTE_ON=65 TIME_DELTA=2.0 NOTE_OFF=65 BAR_END BAR_START NOTE_ON=65 TIME_DELTA=2.0 NOTE_OFF=65 TIME_DELTA=4.0 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=79 TIME_DELTA=2.0 NOTE_OFF=79 BAR_END BAR_START NOTE_ON=76 TIME_DELTA=4.0 NOTE_OFF=76 TIME_DELTA=6.0 NOTE_ON=64 TIME_DELTA=4.0 NOTE_OFF=64 NOTE_ON=65 TIME_DELTA=2.0 NOTE_OFF=65 BAR_END BAR_START NOTE_ON=65 TIME_DELTA=2.0 NOTE_OFF=65 NOTE_ON=76 TIME_DELTA=2.0 NOTE_OFF=76 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=77 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_ON=79 TIME_DELTA=2.0 NOTE_OFF=79 BAR_END TRACK_END TRACK_START INST=53 DENSITY=0 BAR_START BAR_END TRACK_END TRACK_START INST=29 DENSITY=4 BAR_START NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=54 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=54 NOTE_OFF=45 NOTE_ON=54 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=54 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=0.5 NOTE_OFF=52 NOTE_OFF=45 BAR_END BAR_START NOTE_ON=72 NOTE_ON=48 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=48 NOTE_OFF=41 NOTE_ON=81 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=77 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=72 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=81 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=77 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=0.5 NOTE_OFF=41 NOTE_OFF=48 BAR_END BAR_START NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=54 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=54 NOTE_OFF=45 NOTE_ON=54 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=54 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=52 NOTE_OFF=45 NOTE_ON=52 NOTE_ON=45 TIME_DELTA=0.5 NOTE_OFF=52 NOTE_OFF=45 BAR_END BAR_START NOTE_ON=72 NOTE_ON=48 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=48 NOTE_OFF=41 NOTE_ON=81 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=77 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=72 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=81 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=77 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=2.0 NOTE_OFF=77 NOTE_OFF=41 NOTE_OFF=48 NOTE_ON=41 NOTE_ON=48 TIME_DELTA=0.5 NOTE_OFF=41 NOTE_OFF=48 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=0 DENSITY=4 BAR_START NOTE_ON=81 NOTE_ON=76 NOTE_ON=73 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=76 NOTE_OFF=73 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 NOTE_ON=73 NOTE_ON=76 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=73 NOTE_OFF=76 NOTE_OFF=81 BAR_END BAR_START NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 NOTE_ON=72 NOTE_ON=84 TIME_DELTA=2.0 NOTE_OFF=72 NOTE_OFF=84 BAR_END BAR_START NOTE_ON=81 NOTE_ON=85 NOTE_ON=88 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=85 NOTE_OFF=88 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 NOTE_ON=81 NOTE_ON=85 NOTE_ON=88 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=85 NOTE_OFF=88 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 NOTE_ON=88 NOTE_ON=85 NOTE_ON=81 TIME_DELTA=2.0 NOTE_OFF=88 NOTE_OFF=85 NOTE_OFF=81 BAR_END BAR_START NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 NOTE_ON=81 NOTE_ON=84 NOTE_ON=89 TIME_DELTA=2.0 NOTE_OFF=81 NOTE_OFF=84 NOTE_OFF=89 BAR_END TRACK_END TRACK_START INST=66 DENSITY=0 BAR_START NOTE_ON=69 TIME_DELTA=16.0 NOTE_OFF=69 BAR_END BAR_START NOTE_ON=65 TIME_DELTA=12.0 NOTE_OFF=65 BAR_END BAR_START NOTE_ON=69 TIME_DELTA=16.0 NOTE_OFF=69 BAR_END BAR_START NOTE_ON=65 TIME_DELTA=12.0 NOTE_OFF=65 BAR_END TRACK_END TRACK_START INST=35 DENSITY=3 BAR_START NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=42 TIME_DELTA=2.0 NOTE_OFF=42 NOTE_ON=42 TIME_DELTA=2.0 NOTE_OFF=42 NOTE_ON=40 TIME_DELTA=2.0 NOTE_OFF=40 NOTE_ON=40 TIME_DELTA=2.0 NOTE_OFF=40 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 BAR_END BAR_START NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=43 TIME_DELTA=2.0 NOTE_OFF=43 NOTE_ON=43 TIME_DELTA=2.0 NOTE_OFF=43 BAR_END BAR_START NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=42 TIME_DELTA=2.0 NOTE_OFF=42 NOTE_ON=42 TIME_DELTA=2.0 NOTE_OFF=42 NOTE_ON=40 TIME_DELTA=2.0 NOTE_OFF=40 NOTE_ON=40 TIME_DELTA=2.0 NOTE_OFF=40 NOTE_ON=45 TIME_DELTA=2.0 NOTE_OFF=45 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 BAR_END BAR_START NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=41 TIME_DELTA=2.0 NOTE_OFF=41 NOTE_ON=43 TIME_DELTA=2.0 NOTE_OFF=43 NOTE_ON=43 TIME_DELTA=2.0 NOTE_OFF=43 BAR_END TRACK_END TRACK_START INST=26 DENSITY=0 BAR_START BAR_END TRACK_END PIECE_END