Valiant Holding CFO Rolf Beyeler (R) and Chairman Kurt Streit attend a news conference in Bern April 25, 2012. REUTERS/Pascal Lauener (SWITZERLAND - Tags: BUSINESS) 

Professor Rolf Watter (L) and Valiant Holding Chairman Kurt Streit attend a news conference in Bern April 25, 2012. REUTERS/Pascal Lauener (SWITZERLAND - Tags: BUSINESS) 

Valiant Holding Chairman Kurt Streit (R) and Professor Rolf Watter attend a news conference in Bern April 25, 2012. REUTERS/Pascal Lauener (SWITZERLAND - Tags: BUSINESS HEADSHOT) 

Valiant Holding Chairman Kurt Streit speaks during a news conference in Bern April 25, 2012. REUTERS/Pascal Lauener (SWITZERLAND - Tags: BUSINESS HEADSHOT) 

Singers Danielle de Niese (L) and Kurt Streit perform on stage during a dress rehearsal of Georg Friedrich Haendel's opera "Rodelinda" at Theater an der Wien in Vienna March 17, 2011. The opera is conducted by Nikolaus Harnoncourt and will premiere on March 20. REUTERS/Herwig Prammer (AUSTRIA - Tags: ENTERTAINMENT) 

Singers Kurt Streit (R) and Konstantin Wolff (C) perform on stage during a dress rehearsal of Georg Friedrich Haendel's opera "Rodelinda" at Theater an der Wien in Vienna March 17, 2011. The opera is conducted by Nikolaus Harnoncourt and will premiere on March 20. REUTERS/Herwig Prammer (AUSTRIA - Tags: ENTERTAINMENT) 

Singers Danielle de Niese, Kurt Streit and Bejun Mehta (L-R) perform on stage during a dress rehearsal of Georg Friedrich Haendel's opera "Rodelinda" at Theater an der Wien in Vienna March 17, 2011. The opera is conducted by Nikolaus Harnoncourt and will premiere on March 20. REUTERS/Herwig Prammer (AUSTRIA - Tags: ENTERTAINMENT) 

Valiant Holding Chairman af the Board Roland von Bueren (L) and CEO Kurt Streit attend the annual news conference in Zurich March 3, 2008. REUTERS/Christian Hartmann (SWITZERLAND) 

Valiant Holding CEO Kurt Streit attends the annual news conference in Zurich March 3, 2008. REUTERS/Christian Hartmann (SWITZERLAND) 

Valiant Holding CEO Kurt Streit attends the annual news conference in Zurich March 3, 2008. REUTERS/Christian Hartmann (SWITZERLAND) 

Singer Kurt Streit performs on stage as Orlando during a dress rehearsal of Joseph Haydn's opera "Orlando paladino" at Vienna's Theater an der Wien November 14, 2007. The opera is conducted by Maestro Nikolaus Harnoncourt, directed by Keith Warner and will have its premiere on November 17. REUTERS/Herwig Prammer (AUSTRIA) 

Singer Kurt Streit performs on stage as Orlando during a dress rehearsal of Joseph Haydn's opera "Orlando paladino" at Vienna's Theater an der Wien November 14, 2007. The opera is conducted by Maestro Nikolaus Harnoncourt, directed by Keith Warner and will have its premiere on November 17. REUTERS/Herwig Prammer (AUSTRIA) 

Singers Elisabeth von Magnus, Kurt Streit and Markus Butter (L-R) perform on stage as Alcina, Orlando and Caronte during a dress rehearsal of Joseph Haydn's opera "Orlando paladino" at Vienna's Theater an der Wien November 14, 2007. The opera is conducted by Maestro Nikolaus Harnoncourt, directed by Keith Warner and will have its premiere on November 17. REUTERS/Herwig Prammer (AUSTRIA) 

Singers Markus Schaefer, Kurt Streit and Juliane Banse (L-R) perform on stage as Pasquale, Orlando and Eurilla during a dress rehearsal of Joseph Haydn's opera "Orlando paladino" at Vienna's Theater an der Wien November 14, 2007. The opera is conducted by Maestro Nikolaus Harnoncourt, directed by Keith Warner and will have its premiere on November 17. REUTERS/Herwig Prammer (AUSTRIA) 

Im Theater an der Wien hat am 12. Mai 2005 Wolfgang Amadeus Mozarts Oper "Lucio Silla" unter der musikalischen Leitung von Nikolaus Harnoncourt Premiere. Die Oper wurde inszeniert von Claus Guth, das Buehnenbild und die Kostueme entwarf Christian Schmidt. Im Bild v.L.n.R. Martina Jankova als Celia, Kurt Streit als Silla und Cornel Frey als Aufidio waehrend einer Kostuemprobe am 5. Mai. REUTERS/Herwig Prammer REUTERS PR/