Be gentle with me - I've only just got back into bass-playing after an extended "sabbatical". I can't seem to get this tone out of my fretless, and am wondering if there's a trick to it (ie. external effects). It's a fairly common tone on jazz bass lines, Jaco had it, Caron does too. I really can't explain it other than to say it almost has a trombonish(?) feel with a very slight wah. It's on this this (very short) Alain Caron clip from "Grand Cafe" - http://members.home.com/musiconnect/ACGC.mp3 Is it just a good bass through a good amp (..and a good bassist )?