Ab Koster held a professorship at the Hochschule für Musik und Theater in Hamburg, Germany from 1980 to 2019. More than 60 students from his horn studio have won positions over the years in Germany and around the world.
Ab Koster held a professorship at the Hochschule für Musik und Theater in Hamburg, Germany from 1980 to 2019. More than 60 students from his horn studio have won positions over the years in Germany and around the world.