Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:4/4
K:G
['', 'G2 BG DGBG', 'gf edeg']  
X:1
L:1/8
M:4/4
K:G
 BA |: G2 BG DGBG | B2 BA BcBA | G2 BG DGBG | A2 AG AcBA | G2 BG DGBG | B2 BA B2 d2 | e3 f edef | 
 gedB AcBA :: G2 gf edeg | B2 BA BcBA | G2 gf edeg | a2 ag ac'ba | g2 gf edeg | BcBA B2 d2 | 
 edcB cdef | gedB A2 :|  