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:G
['d2) d2 dege dBde dBGB', 'd3 d']  
X:1
L:1/8
M:2/2
K:G
 (Bc | d2) d2 dege | dBde dBGB | AGAB (AB)GA | BABc BAG(B | d2) d2 dege | dBde dBGB | 
 [DA]2 GB AcBA | (G [GB]2) (G [GB]2) :: Bc | d3 d d2 g2 | b4 g4 | [DB]3 (B A2) GB | 
[M:6/4] AAG(A BA)Bc BAGB |[M:2/2] d3 d de g2 | b4 g b3 | [G,G]3 (B A)B [G,G]2 | AcBA | 
 (G [GB]2) (G [GB]3) :|  