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:G
['dBA B2 A', 'edB deg a3 gag g2 e deg']  
X:1
L:1/8
M:6/8
K:G
 dBA B2 A | GED G2 B | dBA B2 A | GBd efg | dBA B2 A | GED G3 | AGE A/B/A B |1 GED D A/B/c :|2 
 GED D2 B |: deg a2 b | ged edB | deg a3 | gag g2 e | deg a2 b | ged edB | dBG A/B/A B |1 
 GED D2 B :|2 GED D A/B/c ||  