Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/4
K:G
['G/B/ d>edc B2 AA BB^cc/e/ d2 z']  
X:1
L:1/8
M:2/4
K:G
 G/B/ | d>edc | B2 AA | BB^cc/e/ | d2 z d | ggff | e2 d z | c2 Bd | ecdF | G2 z |]  