Prog-rock legend and inventor of world music Brian Pern takes us on an imagined journey through the last half-century of rock music. In part one, Pern investigates rock's prehistoric origins, asks who was the smartest band and reminisces about dressing up as a crab.

Brian looks at rock stars who turn to acting (himself included), charity singles and protest songs. Noel Edmonds reveals for the first time how the Russians tried to take down the Concorde containing Phil Collins on his way to Live Aid in Philadelphia.

Brian looks at what breaks up bands, from drink and drugs to creative tension. Plus, rock stars who want to save the world and the state of music today as the series draws to a close.