Thomas Rhett and Mumford & Sons have been named the headliners for Lasso Montreal’s 2026 festival. “After a record year in 2025 that gathered 51,500 fans, we’re excited to finally announce the headline acts for 2026,” the festival stated on Monday. “Always a Montreal favourite, Thomas Rhett returns to Lasso as one of country music’s most beloved performers.” Other big names gracing the stages of the country music festival’s fifth edition include Jon Pardi and Old Dominion. “Together, they add even more star power to the 2026 edition,” the festival added. The full line-up is set to be unveiled in the new year, with Lasso Montreal taking place on Aug. 15 and 16 at Parc Jean-Drapeau. Lasso in the City takes place on Aug. 14. Tickets go on sale on Friday, Dec. 12, at 10 a.m.