Request:Aeterna Christi Munera (Ambrosian chant)

Title: Aeterna Christi Munera (plainchant hymn)

Composer: Anonymous

Date of request: 2002-05-03

Status: Requested

Requested by: Teresa Clark

Additional notes: A motet was usually written to be sung with the Mass. I have been told that this motet was lost. Does anyone know of its existence anywhere?

Editor note: however, Palestrina's Missa Aeterna Christi munera isn't a parody mass (where the mass is based on an existing polyphonic composition). Instead, its based on a plainchant hymn. That's not to say Palestrina might have composed a motet on that text, but if so it's both lost, and unrelated to the mass.