Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:2/4
K:G
['GF G>A Bc d2 c>A AF', 'cA) d>B G2 |{B} AG A/c/F/A/ |1']  
X:1
L:1/8
M:2/4
K:G
{A} GF G>A | Bc d2 | c>A AF | GB d2 |{A} GF G>A | Bc d2 | c>A AF |1 GBG z :|2 GBG B |: (d2 cA) | 
 d>B G2 |{B} AG AB |{A} GFGB | (d2 cA) | d>B G2 |{B} AG A/c/F/A/ |1 GBG B :|2 GBG z |: 
[K:C]"^Trio" G3 cGE c2 | BG d2 | cA e2 | G3 c | GE c2 | B>A GB | ccc z :|  