American alt-folk/grunge supergroup composed of members of grunge bands Nirvana, Soundgarden, and Pearl Jam, as well as alt-rock group Giants in the Trees. Their first eponymous album was released on April 11, 2022. It was the first music released by Kim Thayil and Matt Cameron since the death of their Soundgarden bandmate and friend Chris Cornell.

The band consists of:

• Jillian Raye on vocals/lyrics, guitar, and bass (Giants in the Trees)
• Jennifer Johnson on vocals (Giants in the Trees)
• Kim Thayil on guitar (Soundgarden)
• Jon “Bubba” Dupree on guitar (Void)
• Krist Novoselic on guitar, bass, and accordion (Nirvana)
• Matt Cameron on drums (Soundgarden and Pearl Jam)

New Grunge Supergroup Featuring Members of Soundgarden and Nirvana Drops Debut LP — Rolling Stone

Soundgarden guitarist Kim Thayil, Nirvana bassist Krist Novoselic, and Soundgarden and Pearl Jam drummer Matt Cameron have joined forces to form 3rd Secret. The new supergroup also features Bubba Dupree, guitarist for trailblazing D.C. hardcore outfit Void, and vocalists Jennifer Johnson and Jillian Raye, who also perform with Novoselic's other band, Giants in the Trees.