found: Voices of the Middle Ages ... [Phonodisc] 1967.
found: German Wikipedia, Mar. 12, 2010(Konrad Ruhland; b. 1932, Landau an der Isar; German music historian, pedagogue, conductor, and music editor)
found: Information from 678 converted Dec. 8, 2014(Director, Capella Antiqua, Munich)
found: BnF Data, January 12, 2023(Konrad Ruhland; born February 19, 1932 in Landau an der Isar, died March 14, 2010 in Deggendorf; musicologist, pedagogue and choral conductor; founder of Capella Antiqua München)