This sub-series comprises music recordings conducted by William Klenz, which are available in the format of open reel audiotapes. Within these recordings, Klenz conducts a diverse range of compositions, largely during his time in Chapel Hill, North Carolina. The programs conducted were mainly Collegium Musicum and concerts of Easter music. There is also the inclusion of program brochures in some audiotapes, offering additional contextual information about the recording and the associated musical program.