The short motet is scored for four Voices, SSSA or SSST or TTTB, unaccompanied and displays Palestrina’s gift for transcendent solemnity.Palestrina is one of the towering figures of late Renaissance church music whose polyphonic compositions remain actively performed in the Choral repertoire. He composed more than 250 motets. This one, Alma Redemptor Mater for four Voices, is not known to have been published during his lifetime, but has been found in manuscript form in the Collegio Romano in Rome. In 1545, the Council of Trent set out to reform various practices in the Roman Catholic Church in defense of the threats of the new Protestant movement. Clarity of scriptural words was one of the issues at stake, especially as the polyphonic style, of which Palestrina was a master, overlaid many Vocal lines, creating complex textures. It is possible that this motet was written following the new guidelines of the Council.