Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/2
K:D
['A(D (3FED) CEEG', 'fAeA (3(fga) (ec)']  
X:1
L:1/8
M:2/2
K:D
 (d"^Sign" B) | A(D (3FED) CEEG | FDAD BcdB | A(D (3FED) CEEG | FGEF D2 :|[K:A] (ed | 
 (3(cBA)) (eA) fAeA | (3(fga) (ec) dcBA | (3(cBA) (eA) fAeA | (3(fga) (ec) d2 (ed | 
 (3(cBA)) eA fAeA | (3(fga) (ec) dcBA | dfdB cecA | Bcde fdB"^Sign" d |]  