Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:4/4
K:D
['d2 ef/g/ fdec d2', 'Acec Acec']  
X:1
L:1/8
M:4/4
K:D
 AB/c/ | d2 ef/g/ fdec | d2 dd d2 A2 | BcdB AFGE | D2 AF D2 AB/c/ | d2 ef/g/ fdec | d2 ef/g/ fdec | 
 d2 a2 a2 e2 | fgaf ecdB | A2 AA A2 :: Acec Acec | Bc/d/ fd Bc/d/ fd | Acec Acec | fedc dcBA | 
 G2 BG F2 AF | E2 fa gfed | fgaf gedc | d2 dd d2 :|  