His repertoire as musician ranges from baroque music to John Cage and free improvisation and he has given master classes in baroque performance practice and free improvisation. He has written as well electroacoustic music as works for jazz ensemble, baroque music ensemble, large orchestra, ensemble or solo instruments, such as the Finnish instrument kantele.
Tiensuu's works have been performed by Arditti Quartet, Kari Kriikku, Ensemble Intercontemporain and Jukka-Pekka Saraste, among others. He has also worked at IRCAM.
Jukka Tiensuu has studied in Freiburg, Helsinki, and New York.