Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:2/4
K:G
['D G>DB,D G2 GB A>GFG A2 z']  
X:1
L:1/8
M:2/4
K:G
 D | G>DB,D | G2 GB | A>GFG | A2 z G/A/ | BBBB | BcdB | dAAA | ABcd | BBA/G/A/B/ | G2 z |]  