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 | G2 G E2 F | G2 G G2 G | c2 c d2 B | c3- c z z | c2 c c2 B | A2 A B2 c | d2 c B2 A | 
 G3- G z z | A2 G A2 B | c2 c (B A2) | (G c2) E2 F | D3- D z G | C2 C E2 G | c3 (G2 E) | F3 D2 G | 
 C3- C z2 |]  