Internationally his single Miss Moskva received radio play in most European countries, including France, Germany, Croatia, Hungary and Norway.

[3] Korn performed several tracks with Helena Vondráčková, including "Tančit Prý Je Krásné" and "Slunce".

In 1985, composer Michael Kocáb wrote the tracks "Karel nese asi čaj" and "Nejdřív je trénink" for Korn to record.

Other stage productions he played include The Count of Monte Cristo (2000), Golem (2006), Carmen (2008), and Jesus Christ Superstar (2010).

Korn acted in several films and television shows, including Honza málem králem, Anděl s ďáblem v těle, 2Bobule, and Expozitura.