I met with him for a lesson a couple of weeks ago when I was down in southern california looking at schools to transfer to (I applied to UCLA). He was a really great guy, amazing player. I played the Dragonetti concerto for him and the bourrees from the 3rd bach suite, and in the course of a few minutes he helped me fix things I had been slaving away on for months trying to correct. He picked up my bass and played it 100% in tune across the fingerboard without any of the adjustment time most bass players require to get in tune when playing an unfamiliar instrument. I also played the Koussevitzky Chanson Triste for him and he discussed vibrato with me pretty extensively. He's definitely not a proponent of vibrato-every-note, he spoke pretty extensively on his beliefs about varying speed and width and presence of vibrato within a piece of music to achieve different statements. I was playing the whole thing with a pretty unchanging vibrato, and he made some really interesting points about differentiating the phrases by using different feelings of vibrato to project musical feelings of hesitance and then confidence and such. On the bach suite he just used vibrato to accent the important notes in each phrase, and it certainly wasn't an every note sort of thing. Frankly, if you ask me, I really hope I win the UCLA audition so I can study with this guy. My two cents.