Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:F
['ce B/B/B'  
X:1
L:1/8
M:2/4
K:F
"F" cf ed |"C7" ce B/B/B | ce B/B/B |"F" cf A/A/A | cf ed |"C7" ce B/B/B | c/c/c a>g |"F" ff f z :: 
"Bb" dd/f/ ed |"F" dc !>!a2 |"C7" ag g/f/e |"F" gf !>!f2 |"Bb" dd/f/ ed |"F" dc !>!a2 | 
"C7" ag a>g |"F" ff f z ::[K:Bb]"F7" f/f/f ee |"Bb" d/d/d gf |"F7" fa/g/ fe |"Bb" ed B2 | 
"F7" f/f/f ee |"Bb" d/d/d gf |"F7" a>g fe |"Bb" dd d z :|  