The Gelineau psalms from GIA have an excellent transcription of the chant for Candlemas, the antiphon "Lumen ad revelationem" as well as the nunc to tone 7. I believe it's done by Proulx.
Also good, if you can play it, is Dupre's organ setting of Lumen ad Revelationem from "8 Advent Hymns" or something like that.
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