Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/2
K:Amix
['C A,2']  
X:1
L:1/8
M:2/2
K:Amix
"A" A=cAG EGED | C A,2 C A,3 A, | A,B,CE A2 AG |"D" F D2 F D3 A- |"A" A=cAG EGED | 
 C A,2 C A,2 CB, | A,B,CE AEAG |1"D" F D2 E D3 (A :|2"D" F) D2 E D4 |]:"A" e3 f e2 ed | 
 cdef e2 A2 |"G" d2 d2 BAGB | dBd=c B G3 |"A" e3 f e2 ed | cdef efef |"G" gfgf efed |"A" cABc A4 :|  