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:A
['', 'E>c B>A B', '', 'F>A A2', 'B>A B']  
X:1
L:1/8
M:2/4
K:A
"^instr:" |] E>c B>A | B z B>B | E>c B>A | B z B>B | E>e c>e B>c A>F | E>c B>A | B z ||"^vocal" |: 
 B>B | E z C>E | E4- | E2 F>A | A2 A2- | A2 B>A | F2 E>E | F3 z/ [aA]/ | [fF] z [fF] z | 
 z3/2 A,/ B,>C | E>F A2 | F2 E2- | E2 F>E | C2 B,>A, | B,2 b<ec'/ | b z A>B | c2 c2- | c2 e>f | 
 e2 c>B | A2 B>c | A2 F>E | E2 a<fe/ | e z F>A | A2 A2- | A2 B2 | F2 E2 | z3/2 E/ F>A | A2 F>A | 
 B z [c'c]>[aA] | [bB] z [bB] z"^instr" || E>c B>A | B z B>B | E>c B>A | B z :|  