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In between touring with fellow 'Glee' co-stars on this summer's Glee Live Tour, Criss (aka Kurt's super-hot boyfriend Blaine) performed a solo show at Irving Plaza, and brought out special guest Rivera (aka saucy, in-the-closet bad girl Santana) for a surprise duet.
Naya already wowed with her rendition of Winehouse's 'Back to Black' on the 'Funeral' episode of the hit show, and she delivers again with 'Valerie'. Criss also brought out the shows' Dalton Academy Warblers as guest performers.
Between the TV show, the tour, Katy Perry music video cameos and working on his first solo album effort under Sony Music, Criss has admitted that his schedule is out-of-control busy these days. Naya has signed a solo deal of her own with Columbia Records.
Watch Darren Criss and Naya Rivera perform 'Valerie' live.