Ensemble Intercontemporain, Grisey's "Quatre chants..."

[tubafatness]

I found a video clip on youtube showing a bit of the piece "Quatre chants pour franchis le seuil" by Gerard Grisey, and I noticed that two tuba players are involved in the piece, with one of them doubling on euphonium. Does anyone know who would've played tuba with the Ensemble Intercontemporain for this piece? The performance was done last year on July 6th. There are some good shots of the players in this clip both at 3:22 and at 4:21.

http://www.youtube.com/watch?v=eky5vUFO ... re=related

Thanks!
Aaron H.

Edit: Well, after a hefty 2 minutes worth of searching, I found out that Arnaud Boukhitine is the ensemble's resident tuba player, and am certain that the tuba player who doubles on euphonium is M. Boukhitine. However, there is another tuba player involved. Any clues would be appreciated!

[loic]

Hello,

the player who double on euphonium is Arnaud Boukhitine and second player on F tuba is Stéphane Visini, one of Mel culbertson's student at the Lyon's conservatory (A. Boukhitine is Mel's assistant).

Loïc

[tubafatness]

Thanks for the info!

Aaron