Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:4/4
K:A
['a2 Aa']  
X:1
L:1/8
M:4/4
K:A
 cAce a2 ed | cAEA GBBd | cAce aefd | ecdB cAAd | cAce a2 ed | cAEA GBBc | AcBd ce^df | ecdB cAAg | 
 a2 Aa caAg | a2 ce dcBg | a2 Aa cacA | GBed cAAg | a2 Aa caAg | a2 ce dcBc | AcBd ce^df | 
 ecdB cAAd |]  