Eccard and his school are inseparably connected with the history of the Protestant Reformation.
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Of Eccard's songs a great many collections are extant such as those published in Der Evangelische Kirchengesang (1843) by Baron Karl Georg August Vivigens von Winterfeld.
There is a certain bias in the choir's repertoire towards music of the Renaissance and Baroque periods (Dufay, Ockeghem, Josquin des Prez, Firmin Lebel, Palestrina, Eccard, Byrd, Monteverdi, Gesualdo, Bach, ...).