I stumbled over this while looking for a recording of Leopold Auer on Youtube. Apparently Sir Rog once declared on the radio that this legendary prof who taught Heifetz, Milstein and Elman didn't use vibrato...believe that and you can believe anything, especially when you hear this magical tango from another of his pupils, one Georges Boulanger. I've not come across him before, but he shows exactly what you can do with a violin when you know how. Enjoy.
