I have a spare wah enclosure (a defect Dunlop Bass wah that I can't fix, SMD components ect..) with a 20K pot so I searched around for something fun to put inside and I found the "mouthmeistor" here. Verified!
It's basically two Tim Escobedo Ghost Dance tuned with different resonant ranges that you sweep inbetween.
cheers
/ Fredrik
check out my building blog at www.parasitstudio.se