Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
Q:1/4=140
M:2/2
K:F
['c fgag f2 c2 defd cAGF fgag', 'c3 d Tc2 AB c2 fd TB2']  
X:1
L:1/8
Q:1/4=140
M:2/2
K:F
 c | fgag f2 c2 | defd cAGF | fgag afed | cdc=B c3 :: d | Tc2 AB c2 fd | TB2 GA TB2 gB | 
{B} A2 GF dBAG | FGFE F3 :|  