The legendary musician previewed his new single from his latest solo album, The Boys of Dungeon Lane , out May 29 Paul McCartney stopped by the The Rest Is History podcast and sat down with host Tom Holland for a sprawling conversation that covered everything from how he wrote his first song at 14 soon after his mother’s death to how wartime resilience shaped the Beatles . McCartney also previewed his upcoming song “Salesman Saint” from his latest album, The Boys of Dungeon Lane , set to release May 29. The track begins around the 8:17 mark in the episode below and features Macca taking a walk down memory lane as he sings, “My father was a salesman/ My mother was a saint/ Working every God given minute to make enough to pay the rent/The way was nearly over/The peace would soon begin.” After sharing a snippet of the track with Holland, McCartney discusses witnessing his mother’s courage and profession as a midwife.…