Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['FAdA FAdA', 'd2 g2 bg f2 af efed cAAc']  
X:1
L:1/8
M:4/4
K:D
 FAdA FAdA | BG AG/F/ GE E2 | FAdA FAdA | Bc/d/ eg fd d2 :: g2 bg f2 af | efed cAAc | dABG FAAf | 
 afeg fd d2 :|  