Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:4/4
K:C
['BAB cBA', 'efe d2 B cBA', 'ede fed', 'aba g2 e fed']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:D]!p! ae f e1930 e1960 ad a e f ead'!p!!p! ua ada uca/!p! (.e3/2da) Tue!p! aed b e b uA ee cue e e!p!!p! ua[Q:1/8=160]"^E dorian" .E3 BAB | 
 cBA B3 | E2 E BAB | cBA FED | E3 BAB | cBA Bcd | efe d2 B | cBA FED :| efe d2 B | cBA Bcd | 
 efe d2 B | cBA FED | efe d2 B | cBA Bcd | edc dcB | cBA FED :| 
[K:G]"^version in Am""^A dorian" A3 ede | fed e3 | A2 A ede | fed BAG | A3 ede | fed efg | 
 aba g2 e | fed BAG :| aba g2 e | fed efg | aba g2 e | fed BAG | aba g2 e | fed efg | agf gfe | 
 fed BAG :|  