Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
['DFE EFD DFA AFA BAB d2 e', 'g fed fad fda fdB AFA d2', 'g fdf ece dBd AFA DFA d2']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
 D | DFE EFD | DFA AFA | BAB d2 e | fee e2 f | DFE EFD | DFA AFA | BAB d2 e | fdd d2 :| g | 
 fed fad | fda fdB | AFA d2 e | fee e2 g | fed fad | fda fdB | AFA d2 e | fdd d2 :| g | fdf ece | 
 dBd AFA | DFA d2 e | fee e2 g | fdf ece | dBd AFA | DFA d2 e | fdd d2 :|  