Mark and Tallulah are joined by Guy Vickers — barrister by day, musician and lyricist by night — the man behind the lyrics on Mark Kelly's Marathon and the legal brain behind Marillion's battle with EMI.

• 00:25 — Introducing Guy: weekend warrior, full-time barrister

• 03:13 — How Pete's dinner introduction kicked off the EMI streaming dispute

• 06:03 — The dissolved companies crisis: six months to save the pre-'96 royalties

• 10:05 — Pitching the box sets to EMI, and Fish's pub reunion proposal

• 13:27 — Marathon begins: number stations, spies and lyrics as relationship code

• 19:30 — The Anthropocene concept and what makes a human human

• 21:02 — Writing Amelia and 2051: Earhart, Kubrick, Clarke and Stephen Hawking

• 23:00 — Finding Ollie and hearing Amelia sung for the first time in New Orleans

• 29:15 — Why "Marathon"? The Ritchie Blackmore's Rainbow logic

• 34:07 — The lost song about plagiarism (and Led Zeppelin's borrowed blues)

• 39:00 — Why Amelia crashed: Morse code, blind spots and unknown unknowns

• 43:47 — Wingsuits, risk and how you'd want to go out