Hölle has performed as a guest at major international operas such as La Scala in Milan and the Metropolitan Opera, and at international festivals such as the Salzburg Festival. In 1978, he received recognition as the Komtur in Mozart's Don Giovanni.[1] At La Scala, he appeared as Lucifer in the world premieres of Stockhausen's Donnerstag aus Licht on 15 March 1981 and Samstag aus Licht on 25 May 1984.[2] He appeared in New York City as Rocco in Beethoven's Fidelio.[1] When the Oper Frankfurt was reopened after a fire, he performed as Sarastro in Mozart's Die Zauberflöte.[1]
His recordings include the Stockhausen works, the Bayreuth broadcasts, and complete recordings of Die Zauberflöte, Don Giovanni, and Fidelio.[1]