Compose a piece based on the given chord sequence.
'Gm', 'Cm', 'D7', 'Gm', 'F', 'Gm', 'D7', 'Gm', 'F'  
X:1
L:1/8
M:4/4
K:Gdor
 d |:"Gm" B>G G2 D<G G>A | B>G G2"Cm" c/d/e"D7" d>c |"Gm" B>G G2 D<G G>B |"F" (3ABc F>c f>c A>F :: 
"Gm" G<g g>f g>a g>f | d<g g>a b>g"D7" a>^f |"Gm" g>a b>g a>^f g>e |"F" =f>d c<f A<F c>A :|  