WATCH: Ariana Grande surprises TNT Boys on 'The Late Late Show with James Corden'

MANILA, Philippines — It was a dream come true for international singing sensation TNT Boys when pop superstar Ariana Grande surprised them with an unexpected appearance and duet on CBS’ “The Late Late Show with James Corden” on Tuesday night (Wednesday afternoon in Manila).

The trio of Mackie Empuerto, Keifer Sanchez, and Francis Concepcion, known to be big fans of Ariana, thrilled the audience with their performance of “And I Am Telling You I’m Not Going” when she showed up halfway through the song and joined them on stage. — Video from YouTube/The Late Late Show with James Corden

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