Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/4
Q:1/2=110
M:4/4
K:G
['e d', 'e d'  
X:1
L:1/4
Q:1/2=110
M:4/4
K:G
 D | G G G/A/B/c/ | d2- d B | c d e f | g2- g b | a g f e | e d B3/2 d/ | e d c B | A2 B A | 
 G G G/A/B/c/ | d2- d B | c d e f | g2- g b | a g f e | e d B2 | A3/2 B/ c/B/ A | G3 |: D | 
 G A B c | e d B2 | A3/2 B/ c/B/c/d/ | e d B2 | G A B c | e d B g | f/e/d/c/ B A | G3 :|  