Compose a piece following the designated chord pattern.
'Bb', 'F', 'F7', 'Bb', 'Gm', 'F', 'Bb', 'F7', 'Bb'  
X:1
L:1/4
M:2/2
K:Bb
"Bb" F2 G F | B2 F2 | (G F) (B3/2 c/) | d3 z |"F" c2 c d | c2 c2 |"F7" d c"Bb" B2 |"Gm" B2 B G | 
 B2 c2 |"F" c d c2 |"Bb" F2 G F | (B3/2 c/ d2) |"F7" c2 d c |"Bb" B3 z |]  