Brandy Clark, Brett Eldredge, Martina McBride, Maren Morris, Chase Rice and A Thousand Horses have been added to the fourth annual ACM Party for a Cause Festival, it was just revealed.

They join previously announced headliners Carrie Underwood, Dierks Bentley and Kenny Chesney. The rest of the lineup, which includes Sam Hunt, Chris Stapleton, Cam, Kelsea Ballerini, Old Dominion, Maddie & Tae, Granger Smith and more, can be seen here.

Tickets for the charitable rager—set for 4/1-3 at the Las Vegas Festival Grounds on the strip—are currently on sale. Click here to buy. Proceeds benefit ACM Lifting Lives.

The event leads up to the 51st ACM Awards, which is part of what’s called The Week Country Goes Vegas. The awards show will air from the MGM Grand at 8pm live ET/delayed PT on 4/3 via CBS.

We look forward to using our champagne flutes to down nothing but the best Tennessee whiskey.