Mariah Carey is a knockout…

The 48-year-old half-Venezuelan American singer, who served as a judge on American Idol during Season 12, has been revealed as a key advisor for the Knockouts Rounds on NBC’s The Voice.

Carey will start helping contestants out beginning October 29, mentoring the remaining 32 singers alongside coaches Jennifer Hudson, Blake Shelton, Kelly Clarkson and Adam Levine.

The knockout rounds will feature the 32 budding stars facing off against a teammate as they sing a song of their choosing. Carey will be on hand to help the coaches and their teams prep for the challenge.

Carey, who is preparing to release her album Caution on November 16, also announced the dates of her Caution world tour on Monday, with the 22-city outing slated to kick off on February 27 at The Pavilion at Toyota Music Factory in Dallas.