When he last stood on the podium of the Konzerthausorchester in the fall of 2020, Jörg Widmann thrilled audiences with his energy and musicality. Performing then as conductor, composer and clarinet soloist, this time he has arrived without his clarinet to give the solo spotlight to a very rare instrument – the glass harmonica. On it, Christa Schönfeldinger plays Mozart, in whose time the ethereal-sounding “friction idiophone” was quite in demand in Europe’s concert halls. This boom lasted until about 1830. Widmann uses the exotic instrument in his orchestral work “Armonica”, in which it is not only featured, but also becomes the model for orchestral sound itself. The two works are framed by Mozart’s fast-paced overture to “The Marriage of Figaro” and Beethoven’s Symphony No. 7, already a triumphant success when it premiered in 1812.