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
['dcdA FDFA BABc dcBA', 'd2 fg afdf gecA dcdB AFDF GFGA']  
X:1
L:1/8
M:4/4
K:D
 A2 | dcdA FDFA | BABc dcBA | Bcdc BAGF | Eeed e2 fe | dcdA FDFA | BABc dcBA | BcdB Agfe | 
 dcdc d2 :: fg | afdf gecA | dcdB AFDF | GFGA BAGF | Eeed e2 de(3fff fd ec A2 | gfge dcBA | 
 BcdB Agfe | dcdc d2 :|  