Produced by a team of scholars from the Ústavu hudební vědy at Masarykova univerzita in Brno, Melodiarium hymnologicum Bohemiae is a digital catalogue of monophonic Latin, Czech, and German sacred song found in sources located in the Czech lands or imported into the Czech lands, from the earliest beginnings until the eighteenth century. The database, which is largely bilingual in Czech and English, includes facsimiles and text and melody indexes, along with numerous annotations. While users must establish logins, no fee is required; the resource is supported by the Ministerstva školství, mládeže a tělovýchovy České republiky.