Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/2
K:A
['(cd) eAcA', 'A2 (BA) Beef gedB agab a2 (ba)']  
X:1
L:1/8
M:2/2
K:A
 (cd) | eAcA BGEd | eAcA d2 (cd) | eAcA BGEG | AcBG A2 (cd) | eAcA BGEd | eAcA d2 (cB) | 
 AcBd cefa | gedB A2 |: (BA) | Beef gedB | agab a2 (ba) | gaba gedB | AcBG A2 :|  