Professor Diethelm Jonas became a professor at the Musikhochschule Lübeck in 2001 after he held a professorship for oboe at the Musikhochschule Trossingen since 1980. He studied in Essen at the Folkwang Universität der Künste, in London at the Royal Academy of Music with Lady Evelyn Rothwell-Barbirolli and in Freiburg at the Hochschule für Musik with Heinz Holliger. He has won numerous national and international competitions.

Diethelm Jonas has played in more than 25 years as a solo oboist of the Essen Philharmonic Orchestra, the Bavarian Radio Symphony Orchestra and the Radio Symphony Orchestra Stuttgart under many famous conductors like Bernstein, Kubelik, Solti, Sinopoli, Leinsdorf, Böhm, Haitink, Celibidache, Giulini. As a member of the Lucerne Festival Orchestra even ten years under Claudio Abbado.

His solo commitments and masterclasses regularly lead him to Taiwan, China, South America and Japan. At the Gedai University in Tokyo, he teaches every two years as a visiting professor.

There are more than 25 CD recordings, most of them with his Aulos Quintet and Bläseroktett Sabine Meyer. Many of these recordings have won the ECHO prize.