I started a while back but didn't start taking it seriously until about three or four years ago. When you're a kid/angsty teen you just don't give a damn and practicing anything is a chore.Classically trained just refers to learning music through all the theory and sheet music junk; jazz was a fairly large(ish) part of it, especially when it came to practicing harmony. Mind you, jazz is 'classical' enough now for the Associated Board of the Royal Schools of Music to stick it in their grade syllabus alongside Hayden and Wagner.