Horst Sellentin (14 September 1922 â 10 May 1973) was a German baritone and a choral conductor.
Born in Berlin, Sellentin studied instrumental music, voice and conducting. He worked at the Theater Lübeck from 1946 to 1948. From 1948 he was a singer of the NDR Chor in Hamburg who also appeared as a soloist. In 1960, he co-founded with Max Thurn the boys' choir of the NDR, called in Hamburg and was its director. When the choir became part of the new church , the name was changed to Hamburger Knabenchor St. Nikolai. Sellentin was its conductor until 1971.