Mastodon have added Baroness frontman John Baizley as a member of their touring lineup for their upcoming North American outing, which launches this Wednesday, September 16th. The move comes after Baizley joined Mastodon onstage at a secret warmup club show at The Earl in the band’s hometown of Atlanta this past Friday night.
Baizley performed with Mastodon for the last six songs of the band’s 14-song set at the intimate venue, playing on tunes like “Curl of the Burl,” “Sultan’s Curse,” “Colony of Birchmen,” and “Blood and Thunder,” among others.
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After the show, which the band performed under the name Big Hairy Elephant, Mastodon issued the following statement on their social media pages:
“We had a blast at the Earl last night! A great pre-tour warm up before we break out the lasers and LED screens. Our good pal, John Baizley from Baroness joined us, we had so much fun, we’ve invited him to join us on stage during ‘The Poisonous Weapons Tour’ to play a special set of Mastodon songs we haven’t played in a long time! We’re really excited to bring this special set on the tour. It’s going to epic! Who’s ready to party?”
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Mastodon’s North American “Poisonous Weapons Tour” is in support of their superb new album, Marrow Deep, the band’s first LP since the exit and subsequent passing of longtime guitarist Brent Hinds. Deafheaven and Alcest are providing support on the outing, with tickets available here.
For the tour, Mastodon’s lineup will consist of founding members Troy Sanders, Brann Dailor, and Bill Kelliher alongside guitarist Nick Johnston and keyboardist João Nogueira, with Baizley on select songs.
At the Atlanta gig, Mastodon played four songs from Marrow Deep, including the live debuts of “Barbarians Blood,” “In the Ruins,” and “Poisonous Weapons.”
See John Baizley performing with Mastodon in Atlanta, as well as the setlist from the show and the band’s upcoming tour dates, below.
Setlist:
Barbarians Blood (live debut)
March of the Fire Ants
Crystal Skull
Black Tongue
Megalodon
In the Ruins (live debut)
Your Ghost Again
Poisonous Weapons (live debut)
Curl of the Burl (with John Baizley) (first time since 2013)
Oblivion (with John Baizley) (first time since 2019)
The Czar (with John Baizley)
Sultan’s Curse (with John Baizley)
Colony of Birchmen (with John Baizley) (first time since 2018)
Blood and Thunder (with John Baizley)
Mastodon Fall 2026 North American Tour Dates:
09/16 – Orlando, FL @ Hard Rock ^
09/18 – Asheville, NC @ Asheville Yards ^
09/19 – Pittsburgh, PA @ Stage AE ^
09/20 – Louisville, KY @ Louder than Life ^
09/22 – Philadelphia, PA @ Franklin Music Hall ^
09/23 – Boston, MA @ House of Blues ^
09/24 – Brooklyn, NY @ Brooklyn Paramount ^
09/25 – Washington, DC @ Anthem ^
09/27 – Montreal, QC @ MTelus ^
09/28 – Toronto, ON @ Rebel ^
09/29 – Buffalo, NY @ Buffalo Riverworks ^
10/01 – Detroit, MI @ Fillmore ^
10/02 – Chicago, IL @ The Riviera ^
10/03 – Minneapolis, MN @ Palace ^
10/06 – Salt Lake City, UT @ The Complex ^
10/07 – Boise, ID @ Revolution ^
10/09 – Oakland, CA @ The Fox ^
10/10 – Los Angeles, CA @ Hollywood Palladium ^
10/11 – San Diego, CA @ The Sound ^
10/14 – Denver, CO @ Fillmore ^
10/16 – Des Moines, IA @ Val Air Ballroom ^
10/17 – St. Louis, MO @ The Pageant ^
10/18 – Memphis, TN @ Satellite Music Hall ^
10/20 – Cleveland, OH @ Agora ^
10/21 – Greensboro, NC @ Piedmont Hall ^
10/22 – Atlanta, GA @ The Eastern ^
10/24 – Dallas, TX @ Sick New World Dallas
^ = w/ Deafheaven and Alcest