chordmode turnarround =ccc-ccc-ccc-ccc
chordmode jj1 = b2G-H2H-I2I-J2J-c2c-J2J-I2I-H2H tromp

X:1
T:Blues
M: 4/4
V:1 name=piano
L:1/4
Q:1/4=100
K:C
ch:
\jj1  F7 | Bb7 | F7 | F7 | Bb7 | Bb7 | F7 | F7 | C7 | Bb7 | F7 |
\turnarround C7 :|]