By James Lever and Nat Segnit. In this series documentary maker Nat Segnit investigates the untold stories of visionary mavericks including; the creator of the first animal orchestra; a billionaire planning to freefall from space; an ex-con New York junkie bridge jumper; the first swimmer of the River Europe and the 'Jonahs' who offer themselves to be swallowed by whales. This week Nat explores the life and work of Artur Mistek, founder of Musica Zoologika. With contributions from Charlie Higson, Toby Jones, Eleanor Bron, Peter Marinker and Zeb Soanes. Music by David Pickvance Produced by Steven Canny and Sasha Yevtushenko Nat Segnit's short stories and journalism have appeared in The Times and The Independent on Sunday. For Radio 4 he has written Dolphin Therapy and Strangers on Trains. James Lever is author of the best-selling Me Cheeta, which Lynne Truss loved so much she said, "It will subtly change forever the way we think not only about Hollywood but also about our own species" (The Sunday Times).