Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/16
Q:1/4=192
M:2/4
K:Bb
['e2GA (BGBG)', '(ecec) (dBdB)']  
X:1
L:1/16
Q:1/4=192
M:2/4
K:Bb
"^Presto" e2GA (BGBG) | e2GA (BGBG) | (cBAG) F2fg | agfe edcB | e2GA (BGBG) | e2GA (BGBG) | 
 (cBAG) F2>a2 | (gfed) e4 :| g2eg (egeg) | f2df (dfdf) | (gege) g2eg | (fedc B2)cd | 
 (ecec) (dBdB) | (ecec) (dBdB) | (egfe) dcB=A | B2B2 B4!D.C.! ||  