 In his own teaching career, Kelterborn has served as a lecturer and professor at a number of music colleges in Germany and in Switzerland, where he directed the Basel Music Academy from 1983 to 1994.Kelterborn also headed the music division of Swiss German radio from 1974 to 1980.Farther afield, Kelterborn has held guest lecturerships in the United States, England, Japan, China, and Eastern Europe.