Last night Steve Kazee performed with his band The Shiny Liars at Birdland Jazz Club. Earlier that day, Allie Marshal took to Twitter to tell Steve how excited she was to see the show.

Something about Allie's SoundCloud site must have stood out to Steve because what happened that night was nothing short of remarkable. Kazee found Allie in the audience and asked if she knew the words to "Falling Slowly" from Once. Allie then leapt on stage, shaking with excitement, and sang her heart out with this Tony- and Grammy-winning performer.