Anybody built the EMS-style VCF from "Electronic Music and Creative Tape Recording," by M.K. Berry (Babini Press, BP51), p.30-31. The schematic is posted at http://www.seanet.com/~costello/ and also at http://www.uta.fi/~helin/index-diy.html Any comments on the design - is it actually anything much like the EMS design? J