Medieval collection of chants

One vital condition for plainchant research that began in the 1960s and 1970s was to prepare the source material. This meant obtaining microfilm copies, or transcribing those in original medieval neumatic notation into modern musical writing to ease research. Systematic transcription was done genre by genre partly for publication reasons (Melodiarium Hungariae Medii Aevi I; Antiphons, Responsories), and partly to allow the sources to be appreciated as a whole.