I'm very interested by the funny facts of different artists. For instance, Glenn Gould's odd habits as wearing a wool topcoat in the dog days of summer, seating on a low chair and slumping over the keyboard, humming (sometimes singing) audibly to himself as he played, all the while conducting with his free hand. Paganini played violin with his face facing the floor whereas Heifetz played violin facing the roof (thus Paganini and Heifetz were called "Devil" and "God" respectively). Moreoever, Yoyo Ma never wears sock in his own concerts!
Any intriguing facts are warmly welcomed to be posted here!