Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:6/8
K:G
['B2 d', '', 'bgb afa geg edB']  
X:1
L:1/8
M:6/8
K:G
 d | edG B2 d | egb age | ed G B2 d | ecA ABd | edG B2 d | egb aga | bag ege | dBG G :| ga |: 
 bgb afa | geg edB | ecA ABA | ecA Aga | bgb afa | geg edB | dBG GAG | dBG G2 |1 g/a/ |]  