Me. Over twenty years ago my Violin teacher got snotty about Old Time/Bluegrass etc. not being Real Music. I quit and started trying to learn to "fiddle" with the help of a guitarist. Took me a lot of years to learn not to sound like a "violinist" masquerading as a "fiddler". Classical technique works best on waltzes, slow airs, stuff like that, but I use a LOT of classical bowing technique on fast dance tunes.