I've been trying to get a similar sound on my bass to the synth in Radioheads 'Climbing Up The Walls'. I've asked a few other people and they seem to think the synth is running an automatic LFO to get that swelling sound that resets each time a new note is played. I've done a little research and can't seem to find any pedal units for bass or guitar that'll allow me to replicate that effect. The closest I've gotten is using the Bias tremelo on my Bass pod XTpro but that's tempo dependant which is usless if my band happens to play a song with a slightly faster or slower tempo than normal onstage. Here's a sample of the Radiohead song so you can get an idea of what I'm babbling about. http://www.fourthgradenothing.pwp.blueyonder.co.uk/climbingupthewallsbasssample.mp3 If anyone could tell me how to get an automatic LFO effect on my bass like that, I'd be eternally greatful.