Episode 12 of the London Calling podcast welcomes Irish folk legends Paul Brady and Andy Irvine. While both have had illustrious individual careers, their collaborative album released in 1977 remains a seminal work in Irish music to this day. Ahead of a tour to commemorate this album, which includes a night at London's Barbican Hall, both men spoke with us about the creation of that much-loved album and their long-lasting friendship.