Here is the listing at A New Book of Old Hymns which includes recordings, sheet music, a quizlet set, crossword puzzles and a spotify playlist:
https://newbookoldhymns.brandt.id.au/hymns/venisancte.html
and here is the link to the Blooket quiz:
https://dashboard.blooket.com/set/6634183f348c67ff4cd6f777
source
Could you have 2 voices or groups doing the 1st then 2nd, like a call and response for each group of melodies? Reminds me a little of the Dies Irae
A very opinionated bird.