i've just had the best feedback wank ever. it must have lasted over half an hour (not including actual playing on either side), and now i feel completely cleanesed and ready to sleep. for about an immeasurable time, i was just sat back in the chair with the guitar in my lap, full distortion and reverb, tuned to e-g-d-g-b-e, just fiddling with the three band eq, at first to get to a point where there were several audibal overtones without getting any louder, and then i found a sequence of twists that could make the feedback switch between two pitches a semitone apart - the crossover was awesome.

what i'd do, is it'd be on the first pitch, with only the mid-band up. then i'd slowly bring in the high-band, until the higher pitch just slowly forced it's way in, for a few seconds creating some beautiful friction as the pitch raised. once it settled, i brought the mid back in and brought the high out, but that didn't make it change pitch back down, so i'd have to raise the low-band up a bit, until the bass feedback was just starting to kick in, which affected the high feedback, and then i'd bring the bass down again, somehow leaving the feedback half a pitch lower than it was. and so i'd do it again and again. now i feel lovely.