Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/4
M:4/4
K:F
['', 'F F', 'g/f/ e c c'  
X:1
L:1/4
M:4/4
K:F
 C/B,/ |: A,/C/F/A/ c/=B/c/B/ | c A A/F/C/A,/ | B, G G/^F/G/B/ | A c c C/B,/ | 
 A,/C/F/A/ c/=B/c/B/ | c A A/F/C/A,/ | B, G E C |1 F F F C/B,/ :|2 F F F c/B/ |: A F F E | 
 D B B g/f/ | e c c b | b a a c/B/ | A F F E | D B B g/f/ | e c c E |1 F2 F c/B/ :|2 F2 F ||  