Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:2/2
K:F
['[cA]3 [dB]']  
X:1
L:1/8
M:2/2
K:F
|:"F" [cA]3 [dB] [cA]3 [dB] |"^(C7)" [cA][BG][AF][GE]"F" [FC]4 | 
"Dm" [fd]2 [fd][ge] [af][ge][fd][ec] |"Bb" [dB]6"C7" [ecB]2 |"F" [fA]3 [gB] [ac]2 [gB][ac] | 
"Dm" [fA]2 [FD][GE]"F" [AF]2 [GE][FD] |"Gm" [GD]2 [GD]2 [dB]3 [BG] |"C" [GE]6 z2 :|  