Belle & Sebastian have shared their latest single, ‘What Happened To You, Son?’ ahead of their North American tour.The jangle-pop track features a retro-sounding guitar riff, a thumping bass line and crisp keys. “Son, you’re a mystery / all your precious words don’t mean so much to me” sings frontman Stuart Murdoch during the opening of the song. The track was originally meant to be on the band’s 2023 LP ‘Late Developers’ but was pulled last minute.Speaking of the track in a press release, Murdoch shared: “‘What Happened to You, Son?’ got pulled rather randomly from the last LP because the LP felt one track too long.