Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/2
K:D
['', '(3(cBA) Bc', 'dfed c2 cB cedc d2 dc dfed', 'ecAc defd cdec BABc']  
X:1
L:1/8
M:2/2
K:D
 (3(ABc)S |: d2 cA BGGE | DEFD EA,({B,} (3A,G,A,) | DFAc dfed |1 (3(cBA) Bc dfed :|2 
 (3(cBA) Bc d2 |] (3(ABc) | d2 dc dfed | c2 cB cedc | d2 dc dfed | ecAc (TBA)(Bc) || dfaf gfed | 
 Beef ecAc | defd cdec | BABc dfeSc |]  