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:6/8
K:C
['G2 G']  
X:1
L:1/8
M:6/8
K:C
 G | d2 c cB A | G2 G G2 F | E2 E ED C | G2 G G3 | F3 E3 | F G A GA B | (c2 e) d3 | G3 G3 | 
 A B c BA B | (c3 c2) x |]  