Okay, we all know Jeff's Boogie, right? I've been playing this tune since I was 16 so yeah, you could say I know it. But there's ONE little riff that I can't get right - I have the notes down but I can't for the life of me figure out how he gets that weird, spongy, violin like no-attack sound. I'm thinking either the amp was just so cranked (small amp) that it compressed like CRAZY, or they used some monstrous compression in the control room - something that a lot of British engineers were doing then. Let's see if I can upload the lick in question as an attachment; it isn't very big (less than 90k). Anybody got any ideas?