The Berlin Philharmonic Orchestra (also known as Berlin Philharmonic or BPO; in German Berliner Philharmoniker), is an orchestra based in Berlin, Germany, and one of the world's leading orchestras. Its current principal/Chief conductor is Sir Simon Rattle, who is known for his championing of contemporary classical music. The BPO also supports several chamber music ensembles. Website: http://www.berliner-philharmoniker.de/. The Berlin Philharmonic