The opening concert of the Salzburg Festival, for many regarded as the world's most renowned music festival, is by tradition a high-profile event. In 2010 the Festival celebrated its 90th anniversary and the 50th anniversary of the Great Festival Hall. The official opening concert of the Vienna Philharmonic Orchestra was conducted by Daniel Barenboim, one of today's leading pianists and conductors who 45 years ago had made his debut at the Salzburg Festival. The event opened with Beethoven's Piano Concerto No. 4 with Daniel Barenboim as soloist and conductor. Followed by five "Notations" for Orchestra by Pierre Boulez, the highly acclaimed concert ended with Anton Bruckner's "Te Deum", performed by the famous singers Dorothea Röschmann, Elina Garanca, Klaus Florian Vogt and René Pape, the Chorus of the Vienna State Opera and the Vienna Philharmonic Orchestra.