Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:6/8
K:F
['F2 GA/G/F z A2 BcA z c2']  
X:1
L:1/8
M:6/8
K:F
 F2 GA/G/F z | A2 BcA z | c2 fdcB | A2 G F2 z | F2 GA/G/F z | A2 BcA z | c2 fdcB | A2 G F2 z | 
 E2 F G2 c/d/ | cBAAG z | E2 F G2 c/d/ | cBAAG z | F2 GA/G/F z | A2 BcA z | c2 fdcB | A2 G F2 z |]  