Whats the difference ?

[ubq]

I very often ask myself about the differncies between the German, American, French, and Austrian style of Orchestral tuba playing. Whats the difference? And how do you have to play on an Audition for example in Chicago for Maestro Barenboim, and in Berlin- Deutsche Staatsoper for Maestro Barenboim? If he would take you in the USA, would he take you in Berlin as well if you play in the same way?

thanks for any answers, cheers