Craft a fitting chord progression to merge seamlessly with the given musical theme.
"^= 70-80" F | Bcd edc | dcB f2 d | efg"^Bb/d" fgd | c3 c2 A | 
 Bcd edc | dcB b2 a | gaf =efg | g3 f2 |]: f | fga b2 a | 
 gfe d2 b | abg ^fga | a3 g3 | fga bfg | fgd c2 d"^I" | 
 BBf"^(Gm)" fdg | c3 B2 :|  
X:1
L:1/8
Q:1/8=3
M:3/4
K:Bb
"^= 70-80" F |"Bb" Bcd"F7" edc |"Bb" dcB f2 d |"Eb" efg"^Bb/d" fgd |"Cm" c3"F7" c2 A | 
"Bb" Bcd"F7" edc |"Bb" dcB"Gm" b2 a |"C7" gaf =efg | g3"F" f2 |]: f |"F" fga"Bb" b2 a | 
"Eb" gfe"Bb" d2 b |"Cm" abg"D7" ^fga | a3"Gm" g3 |"F" fga"Bb" bfg |"Bb" fgd"F7" c2 d"^I" | 
"Bb" BBf"^(Gm)" fdg |"F7" c3"Bb" B2 :|  