Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/4
K:A
['edB=c ed/=c/ B2 dc/B/AB A=G E2 d4']  
X:1
L:1/8
M:2/4
K:A
 edB=c | ed/=c/ B2 | dc/B/AB | A=G E2 | d4 B2 | e6 | d=c/B/AB c2 | (3BAG A4 |]  