Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
['d3 fef dBB B2', 'd3 fed']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
|: A | d3 fef | dBB B2 d | cAc efd | cAA ABc | d3 fef | dBB B2 g | fga efg | fdd d2 :: A | d3 fed | 
 faa a2 f | d3 fed | cee cee | d3 fed | f/g/aa a2 g | f/g/af ede | fdd d2 :|  