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Craig Brown has been described by The Sunday Times as "our greatest living satirist". He invented the conservative Spectator columnist Wallace Arnold, and Bel Littlejohn, the long-standing Guardian columnist who many Guardian readers took to be real. Brown is a kind of satirical ventriloquist: impersonating the voices of politicians and celebrities, mocking them week after week in Private Eye and The Daily Mail, mimicking thousands of different voices. This year he celebrates his 25th anniversary of parodying the rich and the famous on Private Eye.

In this edition of Private Passions Craig Brown talks to Michael Berkeley about how he does it ? and why he does it. Does he find the whole world ridiculous? Brown reveals that before embarking on a parody he has to feel the creative germ of irritation, which he then attempts to transform into comedy. Parody, as he reveals, is a delightfully libel-free method of pricking the bubble of self-obsession in celebrity culture.

For Private Passions, Brown reveals the music he finds inspiring, moving and funny. Some of his choices are surprising: gospel songs, for instance, are top of his list. He celebrates the Irish composer John Field, and enjoys both Satie and a plangent lament from Kathleen Ferrier. But he also chooses humorous pieces: Kenneth Williams reading Edward Lear, and Harry Belafonte singing 'There's a Hole in my Bucket'. He talks about living in a musical family; his wife, son and daughter are all gifted musicians, while he can't sing in tune, and has no sense of rhythm at all.

The programme is recorded with an audience at the Radio 3 pop-up studio at Royal Festival Hall, as part of Radio 3's residency at London's Southbank Centre.