The 10th Gustav Mahler Festival in Steinbach am Attersee will take place from June 21 to 28, 2026, the festival's motto is "Mahler’s Universe: The Third Symphony". To mark its 10th anniversary, the 2026 festival will dedicate an entire week to the composer and his extraordinary work. The program includes concerts, a themed hike based on the Third Symphony, a nighttime boat trip, nature experiences, a series of lectures, a film screening, exhibitions, guided tours, and panel discussions. The musical highlight is the performance of the Third Symphony on June 28 with the Bruckner Orchestra Linz conducted by Markus Poschner. The soloist is Wiebke Lehmkuhl, accompanied by the women of the Hard Choir Linz and the Linz Jeunesse Choir, as well as the boys of the Children’s Choir of the Landestheater Linz.