Tiffany Young and Choi Jung Won traveled to the jazzy past on 'Immortal Song'.

On the May 1st 'Time Travel' special, Tiffany Young teamed up with fellow 'Chicago' musical actress Choi Jung Won for their own rendition of the 1926 track "Someone to Watch Over Me" as well as a performance of "Hot Honey Rag" from the musical 'Chicago'. Before their performance, Tiffany revealed she'd watched all of Choi Jung Won's past stages on 'Immortal Song' as well, and they expressed they focused on the '20s as the inspiration for their 'Time Travel.'

Though Tiffany Young and Choi Jung Won got to the final round to face the Yook Joong Wan Band, it was the Yook Joong Wan Band that took the win this episode.

Watch Tiffany and Choi Jung Won's performance above, and let us know what you think in the comments below.