Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/4
M:2/4
K:Eb
['d/ e e f e']  
X:1
L:1/4
M:2/4
K:Eb
 z (B, | E-) E | E3/4 E/4 E/c/ | B/ G d/ | e e | f e | c3/2 d/ | e e | f e | c/c/ G3/4 E/4 | F F | 
 G E | C3/2 z/ |]  