Craft a musical work based on the specified structure and given theme.
X:1
L:1/4
M:4/4
K:C
['D D']  
X:1
L:1/4
M:4/4
K:C
 G, | C2 D D | E2 z E | F2 E2 | E2 D D | D2 E F | G G G/F/E/D/ | C2 B,2 | C2 z |]  