From 1986 to 1992, Boettcher was artistic director of the Sommerliche Musiktage Hitzacker.[4] He programmed a wide repertoire of chamber music from Medieval music to contemporary music, with a focus on composers who had been banned during the Nazi regime.[7] In 1990, he was the soloist in the world premiere of Giselher Klebe's Cello Concerto which was composed for him, with the Philharmonic conducted by Daniel Barenboim.[1] Composers Aribert Reimann, Hans Vogt, and others also wrote music for him.[5][4] Composers such as Henri Dutilleux, György Ligeti, and Witold Lutoslawski appreciated his interpretation of their works.[6]
In 1976, Boettcher was appointed professor at the Hochschule der Künste Berlin, now the Berlin University of the Arts,[1][8] where he taught generations of cellists, including Jan Diesselhorst, who was also a member of the Philharmonic and The 12 Cellists,[9]Wen-Sinn Yang [de] and Dietmar Schwalke. He also taught at the Carl Flesch Akademie Baden-Baden for 22 years.[6] He became a member of the Bayerische Akademie der Schönen Künste in 1988,[10] and was chairman of the jury of the Grand Prix Emanuel Feuermann cello competition.[4]
Together with his two sisters, pianist Ursula and violinist Marianne, Boettcher formed a piano trio that continued to give concerts even in his old age.[1][11] He was married to Regina Vollmar, the niece of his godfather Eberhard Preußner. The couple had a son and four daughters, including the actress Anna Böttcher [de].[12]
Boettcher died in Berlin on 24 February 2021 at age 86.[1][8]
Publications
with Winfried Pape: Das Violoncello – Geschichte, Bau, Technik, Repertoire.[13] Schott, Mainz 1996. 2nd revised edition 2005, ISBN3-7957-0283-6.
Berliner Philharmoniker: Variationen mit Orchester – 125 Jahre Berliner Philharmoniker. Volume 2: Biografien und Konzerte. Henschel, Berlin 2007, ISBN978-3-89487-568-8. OCLC643997826