Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:3/8
K:G
['G/G/ BBA/A/ B2 G/A/ BBA B2 z']  
X:1
L:1/8
M:3/8
K:G
 G/G/ | BBA/A/ | B2 G/A/ | BBA | B2 z | BBB/A/ | BdB | AAA/G/ | AdA | AGB | G2 |]  