The text for this respond at Matins in the Sarum liturgy is derived from Judith 6.19 and 8.19. There is no musical connection between this and any of the polyphonic settings of the text, so far as I know the performance below is the only recording of it ever made commercially. Enjoy :-).
Spem in alium (Sarum plainchant)
Spem in alium nunquam habui praeter in te,
Respond at Matins on Sundays
I have never placed my hope in any other than you,
- I Fagiolini conducted by Robert Hollingsworth.