Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/4
M:3/4
K:G
['D G']  
X:1
L:1/4
M:3/4
K:G
 D | G D B | B G d/e/ | d c B | B A d | c A D | G B d | c A D | G B G | e e e | d3/2 c/B/d/ | 
 c B A | G2 |]  