Low voice and piano - Digital Download SKU: OX.9780193547759 Composed by Sarah Quartel. Score. 3 pages. Oxford University Press Digital #9780193547759. Published by Oxford University Press Digital (OX.9780193547759). ISBN 9780193547759.Taken from Sanctum, a setting of the Requiem text for upper voices, 'Lux aeterna' features a simple and gentle melody, supported by a new piano part in this arrangement for solo voice. Also available in a version for high voice and piano.