Then, Soundgarden/Pearl Jam drummer Matt Cameron and former Pearl Jam drummer Matt Chamberlain came on board.
So, Ben Shepherd plugged in.
The results can be heard in the first song from the album, Baron Robber. It will remind you of a dirty version of a Soundgarden song with Shepherd singing instead of Chris Cornell. Don't forget that Shepherd almost became Nirvana's second guitarist and he's co-written several Soundgarden songs.
Give it a listen.