CanticaNOVA Publications - - Catholic music publishing firm that specializes in "traditional music for the contemporary Church." Online catalog, liturgical planning pages.
Kingsfold Music Productions - - Original liturgical music by Fergal King: MIDI samples (free for personal use); sales of sheet music.
Morgan Music - - New Bedford, MA. Publisher of contemporary music, including recordings. Several recordings for use with sick and dying.
Music at Mass - - Study describing the types of music and instruments allowed and prohibited by the Church.
National Association of Pastoral Musicians - - Membership organization in the United States, dedicated to liturgical music. Several mailing lists, sponsors workshops for cantors and instrumentalists, holds conferences.