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:E
['e2ef gfeg', 'e2 GF EFGA Bcef gfec BAGF EFGA']  
X:1
L:1/16
M:2/4
K:E
 gf | e2ef gfeg | bgeg fegf | e2ef gfeg | fedc B2Bc | efge fecB | ABc=d efae | 
 Bc^de fgaf gefg e2 :: GF | EFGA Bcef | gfec BAGF | EFGA Bceg | fedc B2GF | EFGA BAGB | ABce fece | 
 B/de fgaf | gefg e2 :|  