Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/4
M:3/4
K:G
['d d']  
X:1
L:1/4
M:3/4
K:G
 B/c/ | d d d | B B A/B/ | d d d | c z A/B/ | c c3/2 B/ | A A A | d d c | B z |]  