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
M:2/4
K:D
['D2DE F2FG A2Bc d2de fefb afdf', 'd2 z (de f)edf (ec) z A']  
X:1
L:1/16
M:2/4
K:D
 (3A,B,2C,2 | D2DE F2FG | A2Bc d2de | fefb afdf | eafd edBA | D2DE F2FG | A2Bc d2de | fefb afdf | 
 eage d2 :: z (de | f)edf (ec) z A | BdcB (AF)z(de | f)edf (ec)ze | fa^gb a2z(de | f)edf (ec)zA | 
 BdcB (AF)zE | D2DE FAdA | Bdce d2 :|  