Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/4
M:4/4
K:F
['c2 A/A/ c d3 z c3/2 d/']  
X:1
L:1/4
M:4/4
K:F
"F" c2 A/A/ c |"Bb" d3 z |"F" c3/2 d/ c A |"Dm" A F (A G) |"Gm" G2 G/G/"D" A |"Gm" B3 z | 
"F/C" A3/2 F/"C7" A G |"F" F3 z |]  