QUOTE(lizbun @ Feb 21 2007, 09:09 PM)

I think you need a ery god sense of pitch to play the trombone
From watching my daughter (cello and tromobne) I don't think it's any harder than with a stringed instrument and possibly easier to begin with as for the first two positions which she learnt her teacher told her what to line the slide up with, so you have a visual reminder.