Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/4
M:2/4
K:G
['D G F/G/A/B/', 'B/c/ d']  
X:1
L:1/4
M:2/4
K:G
 D G F/G/A/B/ | c A A G | F/G/ A F/G/ A | B/c/d/e/ d B/d/ | e e d B | c/B/A/G/ A G | D G F/G/A/B/ | 
 A G G2 |] d d B/c/ d | e A A B/c/ | d d B/c/ d | e A A B/c/ | d B c A | B/A/G/B/ A G | 
 D G F/G/A/B/ | A G G z :|  