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:1/2=70
M:4/4
K:G
['G2 BG B<d g2', 'd/c/ Bddg ag/f/']  
X:1
L:1/8
Q:1/2=70
M:4/4
K:G
 D | G2 BG B<d g2 | G2 BA/G/ FAAB | G2 BG B<d g2 | c>A BA/G/ DGG :| d/c/ | Bddg ag/f/ g2 | 
 B>Gd>G FAA d/c/ | Bddg ag/f/ g2 | cA de/d/ BGG d/c/ | Bddg ag/f/ g>c | B<Gd>G FAA B/c/ | 
 d>cBA B>GFE | FD de/c/ BGG |]  