Matthias Kofmehl received his first violin and trumpet lessons at the age of seven. He later switched to playing the viola and the French horn. Already during his time at middle school, he began attending conductor-training with Armin Schibler, and professionally training his singing voice. After completing his Matura (baccalaureate) he applied for his teaching certificate, going on to teach at primary school-level for several years. From 1980 he studied French horn at the Zurich Conservatory, under the Tonhalle Orchestra solo-horn player, Günther Schlund. Between 1984 and 2000, he became a fixed-player with the Tonhalle Orchestra. At the same time, he made solo appearances elsewhere in Switzerland, as well as in Europe, Israel and further afield. Aside from his appearances playing the French horn, he focussed on giving alphorn concerts, most notably the 1987 Concerto for Alphorn and Strings, which was specially written for him by the Swiss composer, Carl Rütti. His debut CD recording, featuring various works and members of the Tonhalle Orchestra, was critically acclaimed by "Swiss Radio International" shortly after it's release. Further recordings then followed, with the Zurich Chamber Orchestra (Jean Daetwyler: Alphorn Concerto Nr. 2) as well as a chamber music ensemble featuring, among others, Mirjam Tschopp and Werner Bärtschi (Mario Beretta: The Alphorn and The Sea.) Between 1986 and 2003, he was contracted as a French horn teacher at the Zurich College of Music. His alphorn courses are not only celebrated in Switzerland, but also in Germany, Austria and Russia. Kofmehl's time is increasingly spent on teaching activities, focussing on both the alp- and French horn, as well as the cornet and trumpet. Since 2006, he has also made more appearances as an alphorn soloist, playing the debuts of two alphorn works by Russian composers in Minsk (Belarus). At the same time, he provided a master-course to 40 horn-players. Together with the Luzern organist, Martin Heini, he gave a recital at the St. Petersburg Philharmonic, as part of their "Brass and Organ Festival". At the 2009 Stelzen Festival, near Reuth (Leipzig), Germany, he was both instructor and alphorn soloist to the Leipzig Gewandhausorchester.