Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:G
['edBA G3 B dG (3Bcd', 'bege Bege']  
X:1
L:1/8
M:4/4
K:G
|: ef | gedg edBA | G3 B dG (3Bcd | gedg e3 f | g2 fg efga | beed edBA | G3 B dG (3Bcd | 
 efgb af f2 | gbaf g2 :: ga | bege Bege | dB B2 dega | bege Bege | degb a3 b | g2 fg edBA | 
 G3 B dG (3Bcd | efgb af f2 | gbaf g2 :|  