Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:6/8
K:D
['DEF ABA FED B,2 B', 'a e3 ede f3 ede f2 a']  
X:1
L:1/8
M:6/8
K:D
 DEF ABA | FED B,2 B | AFE E3 | AFE E3 | DEF ABA | FED B,2 B | Adf efe |1 d3 d3 :|2 d3 d2 e |: 
 faa afe | faa b2 a | e3 ede | f3 ede | f2 a afe | faa b2 a | fed BAF |1 AFE Dde :|2 AFE D3 ||  