Bobby Gillespie: Primal Scream's journey from hard rock to acid house

Thirty five years in the music business and the party is still going strong. Primal Scream are touring the country with their eleventh album - Chaosmosis - another genre defining work. It's been a long journey from hard rock through acid house and the club scene. Krishnan Guru-Murthy has been talking to the band's frontman Bobby Gillespie.