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
Q:1/4=120
M:2/2
K:A
['B A e', 'd e f/g/ a g/f/ e c']  
X:1
L:1/4
Q:1/4=120
M:2/2
K:A
|:"^Quick""^+" e A d2 |"^+" e c B A |"^+" e A d3/2 d/ | e/d/e/d/ B A :: e f/g/ a a/f/ | 
 e/d/e/a/ f d | e f/g/ a g/f/ | e c B A :|  