That's the Adoremus Slovak Choir, and this is from their website:
"Slovak choir Adoremus was founded in the year 1992 as an all-Slovak vocal subject oriented to sacral music. Adoremus is a civic subject oriented to spread Christian music and to help to its aggrandizing.
"From its foundation, Adoremus was successfully presented on many international festivals of sacral music, in the most of the Slovak cities as well as in foreign countries – Czech republic, Hungary, Austria, Germany, Italy, Slovenia and Poland. Adoremus cooperated with Slovak television, Slovak broadcast, radio Vatikan, radio Lumen, with Slovak Philharmony Kosice and with many artists and music composers."
In the above video, they're performing Exsultate justi in Domino (Psalm 32:11; 33:1–4). You can read the English translation HERE.
The arrangement is by Lodovico Viadana (1560-1627), an Italian composer who was also a Franciscan friar of the Order of Minor Observants.
Have a Beautiful Sunday.
H/T: rsmck1
