MMMO: Medieval Music Manuscripts Online DatabaseMMMO database is an international virtual library of music sources, and gathers notated manuscripts of Western language from the medieval period up to 1600. For example, within seconds this database will find all antiphonaries or the twelfth century or all Dominican manuscripts, etc.
A special effort is made to index the songs of the oldest sources contained in fragments, marginalia and notated additions, incorporated in manuscripts which are not fully notated.