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:4/4
K:G
['D G', 'd d']  
X:1
L:1/4
M:4/4
K:G
 D | G D G A | B G B c | d2 c B | A/G/A/B/ A D | G D G A | B G B c | d2 c B | A3 :| d | 
 d c/d/ B d | d c/d/ B d | g f e a | f e/f/ d d | d c/d/ B B | B A/B/ G G | B G A F | G3 :|  