Fredrik Ullén has been played on NTS in shows including Mosca, featured first on 18 July 2018. Songs played include Études, Book 1.

Fredrik Ullén is a Swedish pianist. His solo recordings include Ligeti's complete works for piano, a collection of Chopin transcriptions, and as of May 2006, the first CD in a planned complete cycle of Sorabji's Transcendental Etudes. His first volume of Ligeti's piano works, released in 1996, contained the premiere recording of Ligeti's Book II piano etudes.