Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:4/4
K:D
['d2 df edcB A2 AB AGFE', 'd2 cd ecec Acec fdfd Adfd gege']  
X:1
L:1/8
M:4/4
K:D
|: (3ABc | d2 df edcB | A2 AB AGFE | DFAF DGBG | DFAF GFED | d2 df edcB | A2 AB AGFE | DFAd fedc | 
 d2 dc d2 :: cd | ecec Acec | fdfd Adfd | gege fdfd | edcB A2 DG | BGBG DGBd | AFAF DFAd | 
 FAde fedc | d2 dc d2 :|  