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:6/8
K:D
['A2 A']  
X:1
L:1/8
M:6/8
K:D
 z4 z F | A2 A d2 d | (AB) A F2 F | A2 A d2 B | A3- A2 z | A2 A ddd | A2 B F2 E | DDF(AB) A | 
 F3 F2 E | DDF(AF) E | D3- D2 z |]  