Write a piece of music that adheres to the indicated chord sequence.
'Bb', 'Cm', 'F', 'Bb', 'Bb', 'Bb', 'F', 'Bb'  
X:1
L:1/8
Q:1/4=220
M:7/8
K:Bb
|:"^A""Bb" B2 _AG FED |"Cm" C2 C2 G2 z |"F" F2 ED CDC |1"Bb" B,C DE FG_A :|2"Bb" B,2 F,2 B,2 z |: 
"^B""Bb" F2 B2 B2 B | B2 B2 B2 z | B2 _A2 G2 F |"F" E2 E2"Bb" D2 z :|  