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:1/8=80
M:4/4
K:G
['B2 B>AGB', 'de =f2']  
X:1
L:1/8
Q:1/8=80
M:4/4
K:G
"^moderate" d>c | B2 B2 B>AGB | d2 d2 =f>ed^f | g2 B2 B>AGB | c4 d2 d>c | B2 B2 B>AGB | 
 d2 d2 =f>ed^f | e>dBG A3 G | G4 G2 || de | =f2 d2 f2 d>e | =f>e (3dBA B2 de | =f2 (3edB g2 B2 | 
 c4 d2 d>c | B2 B2 B>AGB | d2 d2 =f>ed^f | e>dBG A3 G | G4- G4 |]  