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
Q:1/4=120
M:2/2
K:G
['g3 e d2 B4', '[GB]2 G2 c [GB]2']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
"^Quick" [Bg]2- | [Bg]dBa g3 e | d2 B4 [Bg]2- | [Bg]dBa g2 d2 | !slide![ee]3 f [ee]2 [Bg]2- | 
 !slide![Bg]dBa g3 e | d2 B4 [DA]2- | [DA]GFE D2 F2 | [GB]3 c [GB]2 :| !slide![GB]2- | 
 [GB]DBc [GB]2 G2 | !slide![GB]3 c [GB]2 ([_E-B]2 | [Ec])dcd [Ec]2 G2 | [Ec]3 d [Ec]2 [Dd]c | 
 BGDc [GB]2 G2 | !slide![GB]3 c [GB]2 [DA]2- | [DA]GFE D2 F2 | [GB]3 c [GB]2 :|  