the rock harmonica masterpiece
This tip’s message is simple. You’ve got an expression pedal. It makes the RP more expressive (as you might expect from a pedal whose name includes the word “expression”). So use it on every patch to express something.
On every RP from the 250 up, you can assign the expression pedal to control just about any parameter of an RP patch. Two of my favorites for this purpose are delay level or reverb level. If I’m running a rotary speaker or vibrato patch, I might assign the pedal to control rotary speaker speed, or vibrato depth, either of which add a lot of emotion (um, expression?) to the basic tone and effect. (Change in a sound equals emotion; a sound that is unchanging is also unfeeling, or at least unvarying in its feeling.) Another favorite is using the pedal to control the Whammy pitch-shifting effect.
If you’re in a dull mood and don’t want to think much, you can always assign the pedal to control overall volume (or as the RP puts it, POST volume, meaning volume control after every other effect in the chain). This is a dull move because 1) a harp player can control volume effectively with breath, and 2) there are more interesting things to assign to that pedal. And 3) the best place to locate a volume control for harp is right on the mic or mic handle, so put one there and use the pedal for something better.
But whether you take the lazy route and use the pedal to control volume, or get more creative and use the pedal to introduce a range of changes to the sound, USE IT. Make sure you take advantage of one of the simplest and most powerful performance features of the RP.
To program the expression pedal:
I repeat: you’ve got a pedal. Know how to use it. You can do amazing things with it that can’t be done any other way. Get on it, man.