Taylor Swift will serve as a mentor during Season 17 of The Voice, which debuts on Sept. 23 on NBC with coaches Blake Shelton, John Legend, Kelly Clarkson and Gwen Stefani.

As a mentor, Taylor will help the contestants on each team prepare for the Knockout Rounds, which pit teammates against each other in a loser-goes-home song performance. The Knockout Rounds are slated to begin in late October.

Blake and John shared the announcement in a video via Instagram that featured Taylor.