Wilko Johnson

HARDtalk's Stephen Sackur speaks to the musician, Wilko Johnson. We're all familiar with rock music's living legends - think Jagger or Springsteen, but perhaps more intriguing are rock and roll's cult heroes - the artists who've 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?