Photo of Kim Thayil taken by Patrick Dunn on May 13, 2017 at Northern Invasion in Somerset, WI

3rd Secret, a supergroup including members of Nirvana, Soundgarden, and Pearl Jam, just released a surprise album.

The band’s second studio album, 2nd 3rd Secret, which follows last year’s self-titled debut, got a surprise release last week.

The band includes Nirvana bassist Krist Novoselic, Soundgarden guitarist Kim Thayil, and Pearl Jam/Soundgarden drummer Matt Cameron, along with Void‘s Bubba Dupree and singers Jennifer Johnson and Jillian Raye.

Stream 2nd 3rd Secret on Spotify.