Wilko Johnson - Musician

Stephen Sackur talks to musician Wilko Johnson. Although rock music's living legends - think Jagger or Springsteen - are familiar, perhaps more intriguing are rock and roll's cult heros, the artists who have inspired other artists without getting massive rewards. Wilko Johnson fits that bill. His raw guitar sound in the band Dr Feelgood paved the way for punk. He's kept on rocking through cancer, depression and changing musical tastes. So what keeps him going?