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Watch the Frequency Sweeping and online guitar lesson by Chris Buono from Funk Fission

If you surveyed a group of guitarists on what was their first effect, the wah-wah pedal would be right up there with a distortion unit of some sort. Stepping forward to click a wah’s notoriously stiff stomp switch and then seesawing your way through that deliciously reduced bandwidth is pure bliss. Another reason the wah is so endearing is because it gives us real-time control. We can change the attenuated frequency range at anytime while playing by just moving the treadle with our feet—genius!

Taking a hint from the joy real-time control brings, the expression pedal emerged allowing us to control other parameters within effects much the same way as a wah pedal. Now you can increase the wet signal of a phaser, the gain setting of an overdrive pedal, or the feedback of a delay with your foot without interrupting what you’re playing. What I’m doing in this segment is combining these two wonderful innovations by sweeping through a range of tailored frequencies within a harmonizer by plugging an M-Audio EX-P expression pedal into the Exp. In jack of an Electro-Harmonix H.O.G.