This week, Jools welcomes guest Robert Plant, inviting the Led Zeppelin frontman to talk him through his musical journey, loves and influences, illustrated by classic clips from the show's archive. Plus, Declan McKenna joins Jools in the studio in a special performance at the piano of Be an Astronaut, from his recently released and critically acclaimed second album Zeros, a record heavily influenced by his '70s glam heroes. There's also music from London Grammar.