The Philharmonia Orchestra is a British orchestra based in London. It was founded in 1945 by Walter Legge, a classical music record producer for EMI. Since 1995, the orchestra has been based in the Royal Festival Hall. The Philharmonia also has residencies at De Montfort Hall, Leicester, the Corn Exchange, Bedford, and The Anvil, Basingstoke. Esa-Pekka Salonen has been the orchestra's principal conductor and artistic advisor since 2008, and Vladimir Ashkenazy and Christoph von Dohnányi both conduct the Philharmonia Orchestra regularly.
The Philharmonia Orchestra tours widely, regularly welcomes top soloists and conductors, and performs more than 160 concerts a year, as well as recording music for films and computer games. Performing more than 35 concerts a year at Royal Festival Hall, the orchestra notably presents premieres of contemporary works, along with the classics. Since its inception in 1945, the Philharmonia has commissioned more than 100 compositions from composers that include Sir Harrison Birtwistle, Sir Peter Maxwell Davies, Mark-Anthony Turnage and James MacMillan.