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:2/4
K:G
['G2 A2']  
X:1
L:1/8
M:2/4
K:G
 D | G2 A2 | BdcB | A2 z B | cBAG | FEDD | G2 A2 | B>cdc | B2 A2 | G2 z |]  