[2] From 1961 he studied oboe with Walter Huwyler[1] and from 1963 to 1968 musicology, German literature and philosophy at the University of Bern (with Arnold Geering and Lucie Dikenmann-Balmer[1]) as well as in 1965 at the Sorbonne,[2] where he listened to Jacques Chailley.
From 1969 to his habilitation in 1974 as assistant to Luigi Ferdinando Tagliavini and from 1980 to 1991 as titular professor, he taught musicology at the University of Freiburg.
[1] He is considered a patron of new music,[1] so he was congress organizer in Boswil[2] from 1982 to 1988 and from 1985 on director of the concert series (Festival Belluard Bollwerk International (1985 to 1990) and Musiques du treizième Siècle (in the Kunsthalle of the Fri Art – Centre d'art contemporain [de],[5] 1990 to 1994)[1] in Freiburg in the Üechtland.
[2] Stenzl has been a member of the board of trustees of the Experimentalstudio des SWR [de] in Freiburg im Breisgau since 1992,[4] of which he is vice president.
[4] He has written articles in the Pipers Enzyklopädie des Musiktheaters [de], in Grove Dictionary of Music and Musicians and in Die Musik in Geschichte und Gegenwart.