• 1960

    member of Dixieland na Suchom Mýte in Bratislava (piano)

  • 1961 – 1969

    member of the group Traditional Club

  • 1962 – 1967

    Faculty of Construction of the Slovak Technical University in Bratislava

  • 1964

    performed at the International Jazz Festival in Prague (with Traditional Club)

  • 1965 – 1966

    performed with Traditional Club at festivals in Vienna, Budapest, Comblain la Tour (Belgium), Munich; tours in Hungary and the former East Germany; took part in a radio broadcast, Jazz in der Tschechoslowakei (the former West Germany)

  • 1967

    participated in the Czechoslovak Amateur Jazz Festival in Přerov, where with Traditional Club, he won first prize in the traditional jazz category; performed at the jazz festival in Prague

  • 1968 – 1969

    engagements in Zurich, Basel, and Geneva (Switzerland)

  • 1970

    some members of Traditional Club remain in Switzerland, performing as the East European Dixieland Company (Igor Čelko, Peter “Lemon” Móric, P. “Mule” Molnár)

  • 1974 – 1978

    member of the Roy King Dixieland Band, with trombonist Roy Crimmins (Great Britain)

  • 1978 – 1987

    member of the Dixieland formation Smoking Band (Zurich)

  • 1988

    leader of the Elite Syncopators quintet, oriented towards old-time jazz

  • 1991 – 1992

    occasional concerts with members of Traditional Club

  • 1993

    member of The Zigerhorns Dixieland Band, with which he played a tour in Australia

  • from 1994

    member of the Jazz Point Dixieland Band (Zurich; Matthias Jenny – trombone, Edy Kieser – banjo, Hans Brunner – drums, Herbie Saurer – trumpet, Jimmy Wettach – bass guitar, tuba, Igor Čelko – soprano saxophone, baritone saxophone)