- Lennart Jarde was born in Sweden in 1955.
- School, Gymnasium, Military service.
- 1975 to 1979: Cello studies at the Royal Danish Conservatory of Music, Copenhagen, Denmark.
- 1980 to 1990 Free-lance cellist in Copenhagen.
- 1991 to 2018: Full-time cellist in Copenhagen Phil Symphony Orchestra.
- 2018 and forwards : Self-employed as Cellist, Composer and Audio Consultant
- 2000 to 2002: Pause from orchestra work; full time employment at Contex, Denmark, as Technical Writer and software programmer.
- 1987 to 2003: Part-time editor for Scandinavian Audio Magazine