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
['A,2 A,C EDEF', 'cAae cAae cAag fedc']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:A] .abc A,2 A,C EDEF | AGAc BABc | A,2 A,C EDEF | ABcA BAFA | A,2 A,C EDEF | AGAc BABc | 
 defd cdec | BABc BAFA || cAae cAae | cAag fedc | dBbf dBbf | dBba gfed | cAae cAae | cAag fedc | 
 defg agae | dBcA GAFA |]  