Newport Folk Festival continues to roll out their 2019 lineup this week, after adding Portugal. The Man on Monday morning, and today the festival teased a mysterious new collaboration, simply called ♀♀♀♀: The Collaboration.

The four symbols—the astrological symbol for Venus that is often used to denote the female sex—hint that the new addition could be a sort of supergroup of women, either those already on the schedule or some new faces. The 2019 Newport lineup already features The Highwomen (Brandi Carlile, Amanda Shires, Maren Morris and Natalie Hemby) and I’m With Her (Sara Watkins, Sarah Jarosz and Aoife O’Donovan), along with solo acts like Sheryl Crow, Kacey Musgraves and Maggie Rogers, and other female-led groups like Lake Street Dive and Liz Cooper & The Stampede, all of whom could be candidates for the to-be-announced collaboration.

Newport Folk Festival will return to Rhode Island’s Fort Adams State Park July 26–28 with a lineup also featuring Trey Anastasio, Phil Lesh & The Terrapin Family Band, Warren Haynes, Jeff Tweedy, Hozier, Lukas Nelson & Promise of the Real, Dawes & Friends, Kevin Morby, Rayland Baxter, Todd Snider and more. All festival information can be found here