Troye Sivan Sings "Plum" at The Late Show With Stephen Colbert in 2018 Sporting a blond 'do, Troye Sivan sang "Plum" at The Late Show with Stephen Colbert while promoting his album Bloom. Talking with the comedian, he explained that the song was about waking up next to someone and realising that the relationship wasn't going to work out — cue audience laughter.