Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
Q:1/8=200
M:4/4
K:G
['GA B2 ge', 'z g dega b2 ag agab d2']  
X:1
L:1/8
Q:1/8=200
M:4/4
K:G
"^moderate" GA | B2 ge dBAB | G2 de d2 GA | B2 ge dBAG | B2 ef e2 z || g | dega b2 ag | 
 agab d2 ga | g/a/bag e2 ge | dB AG G4 |]  