Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:4/4
K:D
['AG FAfe dcBA GBef gfed cBAa geBc', 'd2 (3DDD DFAd B2 G2 EFGd (3cdc', '(3fgf da (3fgf de fdaa baad']  
X:1
L:1/8
M:4/4
K:D
|: AG | FAfe dcBA | GBef gfed | cBAa geBc | (3ded (3cdc (3BcB AG | FAfe dcBA | GBef gfed | 
 cBAa geBc | d2 f2 d2 :: (3ABc | d2 (3DDD DFAd | B2 G2 EFGd | (3cdc (3BcB AGFE | DEFG AB (3cBA | 
 d2 (3DDD DFAd | B2 G2 EFGd | (3cdc (3BcB ABcA | d2 f2 d2 :: ag | (3fgf da (3fgf de | fdaa baad | 
 (3cBA eA fAeA | (3Bcd ef bage | (3fgf da (3fgf de | fdaa baad | cdef bage | d2 f2 d2 :|  