Patricia Kopatchinskaja and Joonas Ahonen performed the empty Danish Radio Concert Hall in Copenhagen on February 11 2021.
Watch the Danish television DR2 broadcast of Beethoven C Minor Sonata, Webern 4 Pieces and Antheil Sonata nr. 1
https://www.dr.dk/drtv/se/dr2-klassisk_-sonater-fra-to-verdener_239960
