 The 1990s boom in progressive house music saw the city's Global Underground record label publish mix CDs by the likes of Sasha, Paul Oakenfold, James Lavelle, and Danny Howells recording mix compilations.The label is still going strong today with offices in London and New York, and new releases from Deep Dish and Adam Freeland.Newcastle's leading classical music ensemble is the Royal Northern Sinfonia, which was founded in 1958 and performed regularly at Newcastle City Hall until 2004.