Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:3/4
K:F
['ccB A2 c2 B>A G2 z BBA']  
X:1
L:1/8
M:3/4
K:F
 ccB | A2 c2 B>A | G2 z BBA | G2 c2 A>G | F3 z AF | c3 fff | f2 A2 G>G | F2 z |]  