Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:6/8
K:D
['e f2 d', 'fed c2'  
X:1
L:1/8
M:6/8
K:D
 B2 | d2 e f2 d | g2 e f2 d | d2 e fed | c2 e2 d e | f2 d g2 e | f2 d fga | gfe d2 d2 :: e2 | 
 fed c2 A | AcA c2 g | fed cBA | c23g fed | c2 B BcB | c2 g (fga) | gfe d2 d2 :|  