Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['(3FED FA dfed', 'A (3Bcd', 'A (3Bcd']  
X:1
L:1/8
M:4/4
K:D
|: AG | FDFA dfed | cdec ABAG | (3FED FA dfed | c2 A2 A2 AG | (3FED FA dfed | cdec ABAA | 
 (3Bcd AB GF (3EFG | F2 D2 D2 :: (3gag | fdfg af (3def | edef gece | dcBA dfed | cdBc A2 dc | 
 (3BcB (3ABA G3 A | (3Bcd (3ABA F3 A | (3Bcd AB GF (3EFG | F2 D2 D2 :: AG | (3FGF (3EFE DFAd | 
 (3cBA Ac Aceg | f3 d gfed | (3cdc (3BcB A2 dc | (3BcB (3ABA G3 A | (3Bcd (3ABA F3 A | 
 (3Bcd AB GF (3EFG | F2 D2 D2 :|  