Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/2
K:G
['([D-A] [DB])ABc d2 Bc d=fed B4 BABc', 'G3 A [DB]2 BA BAGB ABAG E4']  
X:1
L:1/8
M:2/2
K:G
 ([D-A] | [DB])ABc d2 Bc | d=fed B4 | BABc d2 dc | BdAF G3 :: A | [DB]2 BA BAGB | ABAG E4 | 
 [Ec]2 cB cBcB | ABAF G3 :|  