Now here's an accomplishment: a performance from 1985 that is both musically and historically informed of "Es ist vollbracht" from the St. John Passon with alto Panito Iconomu (what a voice!) and viola da gamba soloist Christophe Coin (who you will notice uses vibrato). Nikolaus Harnoncourt is directing the Concentus Musicus Wien. While you are there be sure to check out the other parts of the St. John Passon, as well as those by the Tölzer Knabenchor that are posted. This link goes to a documentary in German (without subtitles) about the Knabenchor, but there are oodles of videos of them in concert nearby.
Tags: Tölzer Knabenchor, Bach, Concentus Musicus Wien, Harnoncourt