Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:6/8
K:F
['AAB c2 A B2']  
X:1
L:1/8
M:6/8
K:F
 AAAAAA | AGA c2 B | GGGGGG | GFG A2 z | AAAAAA | AGA c2 B | GGGGGG | GFG A2 z | AAB c2 A | 
 B2 GAcf | AAB c2 A | B2 G A2 z | G2 G3 c | c=B B4 | f4 BB | dc c3 B | AAB c2 A | B2 GAcf | 
 AABccA | BAG F2 z |]  