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:F
['c=Bcd cfaf dfba gfed', 'f2 (ef) g^fga bgec fefg afcA dbca']  
X:1
L:1/8
M:4/4
K:F
 (uAB) | c=Bcd cfaf | dfba gfed | c=Bcd cAFA | Gc=Bc dcA_B | c=Bcd cfaf | dfba gfed | cfaf dbge | 
 f2 f2 f2 :: (ef) | g^fga bgec | fefg afcA | dbca BgAf | (3(gag) (3(fed) c2 (AB) | c=Bcd cfaf | 
 dfba gfed | cfaf dbge | f2 f2 f2 :|  