For many years their recitals have been acclaimed throughout Europe and the United States, as well as in Japan, the Middle East and South America.
[2] Their recording of Beethoven's songs won special praise for Höll's finely shaded playing.
Another close associate has been the viola player Tabea Zimmermann, and they too have made some remarkable recordings, including sonatas by Brahms and Shostakovich,.
[1] Since 2001 he has accompanied Renée Fleming for recitals in Europe, Australia, Asia and the United States.
He has also worked with other singers, such as Urszula Kryger, Yvonne Naef, Jochen Kowalski, René Pape, Christoph Prégardien, Hermann Prey, Jadwiga Rappé, Peter Schreier, Changyong Liao, and Roman Trekel, and the clarinettist Sabine Meyer.