Develop a musical piece following the specified chord progression.
'Gm', 'Gm', 'Gm', 'D7', 'Gm', 'Bb', 'Bb', 'Bb', 'Bb', 'F7', 'Bb', 'Bb', 'Cm', 'Gm', 'Bb', 'F', 'Bb', 'Gm', 'Cm', 'D7', 'Gm', 'Gm'  
X:1
L:1/8
Q:1/4=144
M:4/4
K:Gmin
 D=E ^F |:"Gm" G AB/A/ GA B2 d | ^c d (3f=ed ^c d2 d |"Gm" .g .f.=e .d.^c .BB/A/ G | 
"Gm" G ^F/G/B A/B/d ^c/d/ g2 | GA B/A/G A B2 d | ^c d (3f=ed ^c d2 d | g f=e d"D7" d/^c/ BB/A/ G |1 
"Gm" G4 z D =E^F :|2 G4 z F GA |:"Bb" BF/B/ dB/d/ fd/f/ (3^ggf | =e f2 f2 fg f | 
"Bb" .b .^g.g .f.e .d.^c .d |"Bb" =e f (3^ggf ed ^cd |"Bb" BF/B/ dB/d/ fd/f/ (3^ggf | 
 (3=efg (3^ggf =ef3/2 d/e/=e/ |"F7" f d/f/e/d/ cd dc/d/ c |1"Bb" B4 z F GA :|2"Bb" B4 z c/B/ AB |: 
"Cm" c3 Bc BA G |"Gm" G4 z A Bc |"Bb" d3 e"F" f e/d/c B/c/ |"Bb" d4 z d ^cd | 
"Gm" g3 ab a/g/f/e/ d |"Cm" g cc (c2 c/)A/B/d/ ^c |"D7" d ^c/d/c BB/A/ BA G |1"Gm" G4 z B AB :|2 
"Gm" G4 z ||  