In the late 1970s, Kaczmarek started working with Jerzy Grotowski and his innovative Theater Laboratory.[1][4] He created the Orchestra of the Eighth Day in 1977. He recorded his first album, Music for the End (1982), for the United States (US) company Flying Fish Records.[1]
In addition to his work in films, Kaczmarek was commissioned to write two symphonic and choral pieces for two important national occasions in Poland: Cantata for Freedom (2005) to celebrate the 25th anniversary of the Solidarity movement, and Oratorio 1956 (2006) to commemorate the 50th anniversary of a bloody uprising against totalitarian government in Poznań, Poland. Both premieres were broadcast live on Polish national television. Other concert works of the composer include Jankiel's Concert, The Open Window and Fanfare A2. On 10 May 2014, the world premiere of Universa – Open Opera, an opera written for the 650th anniversary of the Jagiellonian University, was held in Kraków's Main Square. Jan's last monumental work, Emigra – The Neverending Symphony, was performed in February 2017 in Gdynia, Poland.[6][failed verification]
In 2007, Kaczmarek began working to set up a film institute in his home country of Poland. Inspired by the Sundance Institute, he intended for the new institute to serve as a European center for the development of new work in film, theater, music and new media. His Instytut Rozbitek (Rozbitek Institute) opened in 2005.[7]
On 1 July 2015, he was awarded the Knight's Cross of the Order of Polonia Restituta for his outstanding artistic accomplishments and for promoting Polish culture abroad.[8]
In 2023, Jan's daughter stated that Kaczmarek was suffering from multiple system atrophy, for which there is no cure.[11] He died in Kraków on 21 May 2024, at the age of 71.[12][13]