Develop a musical piece using the given theme and incorporating the letter-based structure provided.
X:1
L:1/4
M:2/2
K:G
['A F/D/ G', 'B d']  
X:1
L:1/4
M:2/2
K:G
 (B/ | d) d A F/D/ | G A/A/ B B | c c A F/D/ | G A G3/2 A/ | B B A F/D/ | G A B B/B/ | c c A F/D/ | 
 G A G3/2 |: A/ |[M:2/2] B d d d/d/ | e d- d d | B d B B |[M:3/2] A F/A/ B (G [G,G]3/2) :|  