Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/16
M:2/4
K:D
['', 'AG F2A2 ABAF G2B2 |1 BcBG F2A2', '', 'f2d2 fdfg a2a2 |1', 'ecAc e2f2 g2ag :|2 dedc ABAG F2D2']  
X:1
L:1/16
M:2/4
K:D
"^A" |: AG | F2A2 ABAF | G2B2 |1 BcBG | F2A2 efed | c2A2 AB :|2 B2(3(ABc) | dedc ABAG | F2D2 D2 :| 
"^B" |: de |: f2d2 f2d2 | fdfg a2a2 |1 ecAc ecAc | e2f2 g2ag :|2 dedc ABAG | F2D2 D2 :|  