Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:3/4
K:D
['D2 D2', 'A2 A2'  
X:1
L:1/8
M:3/4
K:D
 D2 D2 D2 | (3DCB, A,4 | DFABAG | F2 E2 D2 | (3dcB B4 | (3cBA A4 | c2 cBAD | C6 :: A2 A2 A2 | 
 (3GFD E4 | FAcf ac' | c2 BA DC | (3fed e2 g2 | (3edc d2 f2 | GBdBGE | F6 :|  