for SSAA unaccompanied. This Marian text for Eastertide, Regina caeli, was set four times by Morales. This setting for four voices was first published in the Spanish composer's 1543 collection and notated in high clefs. The simple-tone plainchant hymn is strongly referenced in each of the vocal lines, with Alto 1 dedicated as a cantus firmus for the majority of the piece. Offprinted from The Oxford Book of Upper-Voice Polyphony.