Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
Q:1/4=120
M:2/4
K:G
['.B.d .c.e db b/^a/b ca', 'cA A/G/A']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:G
 .B.d .c.e | db b/^a/b | ca a/g/a | Bg g/f/g | .B.d .c.e | db b/^a/b | ca a/^g/a | gg g2 :: 
 ge e/^d/e | dB B/^A/B | cA A/G/A | BG G/F/G | ge e/d/e | dB B/A/G | cA A/G/A | G2 G2 G2 :|  