Getty Images All systems are go for All Things Go . The Washington, D.C. edition of the multi-city festival just announced their 2026 lineup and this year’s slate features an eye-popping array of pop superstars, indie artists, singer-songwriters, angsty rockers, folk icons and so much more. Some of the most notable acts set to step foot into Columbia, MD’s Merriweather Post Pavilion from Sept. 25-27 include former Paramore frontwoman Hayley Williams , singular force of nature Mitski , arena headliner Brandi Carlile , Katie Gavin’s innovative girl group MUNA and rapidly rising elder Gen Z icon Zara Larsson . Other biggies you won’t want to miss include Ethel Cain , Lola Young , Suki Waterhouse , Rainbow Kitten Surprise and Father John Misty . Magdalena Bay , Sienna Spiro , Del Water Gap , CMAT and Slayyyter round out the lineup. Plus, don’t forget envelope-pushing comedian (and Gabby Windey wife) Robby Hoffman will be there, too.…