There is so much that makes Byrd a singularly great composer, not the least of which is his melodic and rhythmical agility. There is a lot of both in this gem of a motet, Visita Quaesumus, the Collect for Compline. I have to confess that I haven't been able to figure out why Byrd wrote this text polyphonically. Presumably it couldn't be done in liturgical context this way. If there is another place where this text appears, I'm unaware of it. Or perhaps it's a Sarum thing.
In any case, I've managed to find an appropriate use for it. Given the peculiar challenges of finding motets for the "Green Sundays" of the year, I scour all of the liturgical texts. One can of course make use of a polyphonic proper, but beyond this it can sometimes be difficult to find something specific for the day, which is hardly necessary all the time but desirable nonetheless. When I was planning the music for October, I read the Collect for the 21st Sunday after Pentecost (which was today in the 1962 Roman Missal):
O Lord, we beseech Thee to keep Thy household in continual godliness: that through Thy protection it may be free from all adversaries, and devotedly given to serve thee in good works, to the glory of Thy Name. Through our Lord, etc.
I immediately thought of the Visita Quaesumus: