I have found this two beautiful videos of Iste Confessor but there is no reference on the authors and notations. If someone recognizes the hymn tunes or the authors I would be most grateful.
Video 1: https://www.youtube.com/watch?v=21Asa0ifyA8 (fixed the wrong link)
Video 2: https://www.youtube.com/watch?v=5e5irTBk6as
Video 1: https://www.youtube.com/watch?v=21Asa0ifyA8 (fixed the wrong link)
Video 2: https://www.youtube.com/watch?v=5e5irTBk6as