The Four Chord Music Fest in Pittsburgh, Pennsylvania, has revealed its 2026 lineup, featuring headliners Knocked Loose and Pierce the Veil , along with Underoath, Kublai Khan TX, We Came As Romans, Mayday Parade, and more. The festival is set to take place September 25th and 26th at F.N.B. Stadium (formerly Highmark Stadium). An early bird sale is under way, with a public on-sale beginning Friday, May 8th, at 10 a.m. ET at this location . The Friday, September 25th lineup will see Knocked Loose headlining a bill that includes Underoath, Kublai Khan TX, We Came As Romans, Saosin, Superheaven, Counterparts, Haywide, Militarie Gun, and more. On Saturday, September 26th, Pierce the Veil top a lineup that features Mayday Parade, Boys Like Girls, State Champs (performing their 2015 album Around the World and Back ), Mom Jeans, Motion City Soundtrack, and more. “I just love the city of Pittsburgh,” stated Four Chord Music Fest founder Rishi Bahl.…