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
['a2 a2', 'eg fedf edcB A2 c2']  
X:1
L:1/8
M:2/2
K:A
 (3ef^g | a2 a2 =g2 e2 | fe=gf e2 e2 | a2 a2 =gefg | a2 aa a2 (3ef^g | a2 a2 =g2 e2 | fe=gf e2 cB | 
 A2 c2 efed |[M:3/2] cABA A3 A A2 :: [A,E]2 (3(ABc [ee]2) eg | fedf edcB | A2 c2 [ce][ce][ce]d | 
 cABA G [A,E]3 | [A,E]2 (Ac) !slide![ee]2 eg | fedf edcB | A2 c2 [ce][cf][ce]d | 
 cABA !slide![AA]3 A [AA]2 :|  