The Great Hall (seating capacity 797) is the most highly esteemed concert hall in the region. With its outstanding acoustics (reverberation time ca. 2.5 seconds), it is equally appropriate for solo evenings, chamber music, symphony and choral concerts, as well as for big band and pop music events. Among other things, the Master Concerts of the Musical Academy, a series with top performers on the international scene, take place here. Since 2016 the Great Hall became home to a monumental new organ for solo organ concerts and for use with ensembles or orchestras. The instrument, built by the Organ Building Firm Klais in Bonn, is outfitted with the most modern technical devices.