Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/16
M:3/4
K:D
['fdfg ecec Adfd ecec d2ef agfg', 'edef edef'  
X:1
L:1/16
M:3/4
K:D
|: d2f2 f2a2 a2d'2 | d'2a2 a2ga f2d2 | c2e2 e2g2 g2b2 | c'2a2 fdfg ecec | Adfd ecec d2ef | 
 agfg fdfg ecec | Adfd ecec d2ef | agfg fdfg ecec :: edef edef edef | g4 bgeg afdf | gece d4 D4 :|  