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In the video, the trio sang a portion of Mika’s 2007 track, “Grace Kelly.”
“Duet this if you’re going to be a coach on #TheVoice this fall,” Gwen captioned the video, which you can watch below.
Gwen joined the reality singing competition in 2014 for the 7th season, before stepping back and becoming a part-time advisor in season 8. However, she was back in full judge mode by season 9.
Following that season, Gwen went back to being just a part-time advisor in season 10 before taking a break from the show. She was back as a coach for season 12.
She took her second break after that, and made it a long one. Gwen returned as a coach for seasons 17 and 19. The latter was her first time winning the competition.