According to metalinjection.com:
What do you get when you combined Pearl Jam and Soundgarden drummer Matt Cameron, Foo Fighters drummer Taylor Hawkins and Melvins frontman Buzz Osborne? Apparently a whole new band. Not much is known about what the project entails or who else is involved right now, but Alternative Nation is reporting that the band is in the studio and Cameron has been teasing it via his Instagram stories.
You can watch those short clips below and start wondering what this is even going to sound like. Because again – the below clips confirm the band is in the studio, but they don't really sound like much of anything.