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
['DFAF F2 A,2 EGAG (3EFE A,E FAdF', 'gbag fdec (3ded']  
X:1
L:1/8
M:4/4
K:D
 DFAF F2 A,2 | EGAG (3EFE A,E | FAdF GBec | Adfd (3cBA (3GFE | DFAF F2 A,2 | EGAG (3EFE A,E | 
 FAdF Ggec |1 d2 dc d2 FE :|2 d2 dc dfgf || ec (3AcA EAce | fd (3AdA FAdf | (3gag fg efdf |1 
 (3efe (3dcB ABcd | ec (3AcA EAce | fd (3AdA FAdf | gbag fdec | (3ded ce d2 gf :|2 
 (3e^de f^g a2 (3efg | aece (3Ace ge | fdAF D2 ef | gbag fdec | (3ded AF D4 :|  