Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
['d2 D FGA']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
|: (3A/B/c/ | d2 D FGA | Bed cBA | d2 D FGA | Bec d2 (3A/B/c/ | d2 D FGA | Bed cBA | d2 D FGA | 
 Bec d2 A | fed fed | fed fed | ecd ecd | egf e3 | dcB dcB | dcB dcB | ced ced | ced c2 :|  