Benjamin Muller is the Chief Chazzan of the Jewish community of Antwerp, Belgium. His website has his personal history, links to a CD page which has excerpts of the music. You have to click on the small bars below the titles. (Each bar is it’s own set of play/pause/stop buttons.) He also has some interesting histories of the great cantors with small clips. A very intersting “right and wrong” nusach combinations pages (using the metaphor of stoplights for “right” and “wrong” combinations) is a small teaching tool.