Construct a piece of music by converting the stated musical sequence into an alphabetical format and integrating the supplied motif.
X:1
L:1/4
M:3/4
K:G
['_B G']  
X:1
L:1/4
M:3/4
K:G
 G/>G/ | G _B G | d2 d | c A _B | G F G/>G/ | G _B G | d2 d | c A _B | G F _B/>c/ | d3/2 c/ _B | 
 A3/2 _B/ c | c3/2 d/ c | c2 z | _B2 G | F2 G | _B3/2 c/ d | d3/2 c/ A | _B3/2 A/ B | G2 |]  