Fr. Samuel Weber just dropped into my inbox something I've longed for over many years. It is a complete Tenebrae service, sung mostly in English, to be used in any parish. To do this yourself would require weeks--well, if I did it, it would be longer--and here it is ready for booklet printing, for both choir and congregation. Of course you can substitute any chant with polyphony. You should download this and put it in a safe place and ready for next year, or even this year if you are ready. It is quite spectacular, a very viable combination for bringing the old into the new (typical) parish setting.
Tenebrae according to the use of the Cathedral Basilica of St. Louis.