Craft a musical work based on the specified structure and given theme.
X:1
L:1/4
M:3/4
K:G
['G A', 'd B'  
X:1
L:1/4
M:3/4
K:G
|: z D | G2 G | A G A | B d B | A G A | B A G | E2 F | G3- | G :| B c | d2 e | d B G | d2 e | 
 d B G | G B d | e d B | B3 | A2 D | G2 G | A G A | B d B | A G A | B A G | E2 F | G3- | G |]  