SATB Choir and Soprano Solo. Why didn't we think of this before? Stanford's delicious choral work The Bluebird (op. 119, No. 3) used with O Nata Lux, beautifully set by Alan Lewis. Not that difficult and well worth the effort! In Latin.
O nata lux de lumine, Jesu redemptor saeculi,
laudes precesque sumere.
Qui carne quondam contegi dignatus es pro perditis
Nos membra confer effici,
Tui beati corporis.
O Light born of Light, Jesus, redeemer of the world,
accept our praises and prayers.
O you who once deigned to be hidden in flesh on behalf of the lost,
grant us to be made members of your blessed body.