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:2/4
K:G
['G2 DB', 'A2 Dd B2 GB DD/D/', 'z czA z FzA z']  
X:1
L:1/8
M:2/4
K:G
 D | G2 DB | G2 DB | DD/D/ DD | DBG>D | G2 DB | G2 DB | DD/D/ DD | G3 :: F/G/ | A2 Dd | B2 GB | 
 DD/D/ DD | DB G2 | A2 Dd | B2 GB | DD/D/ DD | G3 :: A | B z d z | czA z | FzA z | GAB z | Bzd z | 
 czA z | FzA z | G3 :|  