I first saw Yehudi Menuhin when I was very young. I loved his sound, and his interest in music beyond classical realms. Mr. Menuhin was a classically trained violinist who loved all kinds of music, Jazz, and fiddle. I did meet him, but do not have a picture. Below is a youtube video of Yehudi Menuhin playing jazz with Stephane Grappelli.
Frankie Gavin is also a favorite of mine, an Irish fiddler who loves music in a similar fashion. Frankie Gavin I have met more than once. Below I do have some pictures, and a video (not with me) of Gavin playing in a pub with a tin whistle player.