Compose a musical piece by integrating the alphabetic representation of the specified sequence and the provided motif.
X:1
L:1/8
M:6/8
K:G
['B2 G']  
X:1
L:1/8
M:6/8
K:G
|: d |"G" d3 dcB |"D" cBA"G" B2 G |"Bm" d3 def |"C" gfe"D" def |"G" g3 dcB |"D" cBA"G" B2 G | 
"C" cdc"G" B2 G |"D" ABA"G" G2 :: B |"D" A2 D ABc |"G" B2 D GBd |"C" e2 c"G" dcB |"Am" A3 c2 B | 
"D" A2 D ABc |"G" B2 D GBd |"C" e3"Am" c3 |"D" ABA"G" G2 :|  