Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:2/4
K:D
['fa aggg g2 gb baaa a2 aa']  
X:1
L:1/8
M:2/4
K:D
 fa | aggg | g2 gb | baaa | a2 aa | d2 d2 |"^1)" x2 x2 | (dc) B.A | f3 e | d2 GG | B2 e2 | dc Bc | 
 d2 |]  