Several years ago I arranged a Purcell-like piece for chorus that someone remarked was "familiar," so I set it aside. It's one thing to borrow tropes from the baroque canon as an exercise and another to copy things, so I would like to know if someone can point to a classical (presumably baroque) piece that this one copies or strongly resembles, so I can give proper credit.
Either way it's a nice melody, and I have no vested interest. Thanks as always for the generous spirit of this site.
Edit, 12.19.16: This is an updated link that gives a much better idea. The first minute and twenty seconds contain the part of interest.