Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:2/2
K:D
['d>ef>e d>cB>A', 'DD/D/ AF', 'a>ba>f a>ba>f'  
X:1
L:1/8
M:2/2
K:D
 d>ef>e d>cB>A | BdAF E/E/E E2 | d>ef>e d>cB>A | B>dA>F D/D/D D2 :: DD/D/ AF DD/D/ AF | 
 EE/E/ BG EE/E/ BG | DD/D/ AF DD/D/ AF | GBAF DD/D/ D2 :: a>ba>f a>ba>f | gebe gebe | 
 a>ba>f a>ba>f | geaf dd/d/ d2 :|  