TubeNet

If you move the video over to 58:40,(1hour 1 minute is a good place to listen) you'll hear the tuba player for the Frankfurt Radio Symphony warm up for about 10 minutes. Unfortunately, you can't see him until the 2nd half resumes because they have graphics on the screen.

http://concert.arte.tv/fr/marin-alsop-d ... -orchestra" target="_blank