Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:2/4
K:A
['FE CE EF/E/', 'ef/e/ Ac/e/ fe f/g/a/f/'  
X:1
L:1/8
M:2/4
K:A
|: C>E FE | CE EF/E/ | CE Ac | B/c/B/A/ FA | CE FE | CE EF/E/ | ed/e/ Ac | Bc/B/ A2 :: 
 ef/e/ Ac/e/ | fe f/g/a/f/ | ec/e/ fc | ec Bc | ef/e/ Ac/e/ | fe f/g/a/f/ | ec BA/B/ | cA A2 :|  