Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/16
M:2/4
K:F
['c=BcA d_Bfd cAFA', 'aAgA fAeA fAeA']  
X:1
L:1/16
M:2/4
K:F
|: AB | c=BcA d_Bfd | cAFA cAdc | BAGB AGFA | Gc=Bd c_BAB | c=BcA d_Bfd | cAFA cdef | defg efga | 
 f2f2f2 :: ef | aAgA fAeA | fAeA dAfA | eA^ce agfe | fgef defg | aAgA fAeA | fAeA dAdf | 
 efga bgeg | f2f2f2 :|  