Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:4/4
K:D
['', 'dAFA DAFA', 'fedc BABc dcBA']  
X:1
L:1/8
M:4/4
K:D
 (3ABc |: dAFA DAFA | EAFA DABc | dAFA DAFA | eedf eABc | dAFA DAFA | EAFA DABc | dcdf edBc |1 
 dfec d2 (3ABc :|2 dfec d2 c2 |: BABc dcde | fefg fedc | BABc dcBA | GFGA G2 F2 | BABc dcde | 
 fefg fedc | BABc dcBA |1 Bbfd B3 F :|2 Bbfd B2 (3ABc |]  