Jewish Chazzanut
You have found the way to Chazzanut on Jewish:
Chazzanut Online - Comprehensive site on Chazzanut. Contains original sheet music by cantor Yossele Rosenblatt, Isaac Heymann, and Abraham Katz. Offers a selection of traditional Dutch synagogue tunes (Nusach) with midi audio, archive with articles from Dutch pre-war newspapers, and background information on tunes including Max Bruch's Kol Nidrei and the Maoz Tzur.
Bazian, Moshe - Videos and MP3s of concerts from this chazzan.
Modzitz - The Modzitz chassidim are renown for their beautiful tunes. This site features a large MP3 collection of these nigunim.
ShulMusic - Complete sheet music collection of Salomon Sulzer as well as the Bluebook anthology of English chazzanut.
ShulMusic List - Chazzanut email list and Yahoo groups site.
Zamir Chorale of Boston - Non-profit mixed chorus who perform of Jewish choral music. Includes schedule, press clippings, recordings and biography. Help build the largest human-edited directory on the web.