American Music Abroad, Inc.
   Organizes tour group travel to Europe, Scandanavia, Ireland and the UK for non-professional choirs, bands and orchestra, both from schools and colleges and those composed of adult volunteers.
   http://www.americanmusicabroad.com/

CASA - Contemporary A Cappella Society of America
   A comprehensive source for news and information related to all-vocal music. Also features events, groups, albums, tips and advice, reviews, classifieds, web directory, song arrangements library, and other details.
   http://www.casa.org/

NPR : Honky Tonks, Hymns and the Blues
   Radio series highlights the creation of the American musical traditions that give this country its own unique sound. These continue to influence music and culture around the world. This series' segments feature oral histories, historic performances, rare
   http://www.npr.org/programs/morning/features/2003/honkytonks/