Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:3/4
K:G
['G GB']  
X:1
L:1/8
M:3/4
K:G
 G | GB d3 B | cd e2 z d | d>c c2 BA | Bc d2 z G | GB d2 B2 | A2 G2 z G | GB d2 B2 | A2 G2 z |]  