The Ray D'Arcy Show hosted quite the musical reunion on RTÉ Radio 1 on Wednesday when Darragh Smith and Stëphänié Starpøng sang together again after wowing the commuters in Dublin's Connolly Station on Friday night.
Strangers before their Friday debut, Darragh was playing the piano in the station's concourse when Stëphänié joined him on his cover of A Great Big World & Christina Aguilera's Say Something, with the video of their performance subsequently going viral.
"It's just a lovely feeling when people stop or are recording or clap afterwards," Darragh told the host. "It fuels me for the rest of the day."
He said he "actually got a fright" when Stëphänié came up behind him to sing.
"I was in the middle of a song and when she joined in I was like, 'What the hell is that?!' I was like, 'Oh my God! She's incredible!' It was amazing. It was really amazing.
"And I turned to her then and said that after a little break that we had. I just said, 'Oh my God, your voice is incredible'. She ran off on me and I thought, 'She must not like compliments or something!'"
Stëphänié recounted that she had been coming back from her "first-ever performance" at a college when she heard Darragh playing.
"I was just waiting for my train as well [and] heard Darragh on the piano," she continued. "I can't play the piano myself, so when someone else plays it I kind of gravitate towards them. [I] Heard the lovely voice with it and I was just kind of like, 'Do you know what? I think I might just as well sing the chorus'.
"But I didn't know the rest of the song so I was like, 'It's going to be awkward if I sing the wrong lyrics then it won't be as nice anymore'. So I just kind of wandered off!
"And I did catch the little compliment afterwards but I just didn't want to ruin the song! We didn't know each other but it was nice, and we didn't expect anything from the video as well."
Having duetted once more, they both agreed with the presenter that "this could be the beginning of something wonderful".