Sweet Adelines International, a non-profit music education association for women founded in 1945, endows its' members with a mastery of 4-part unaccompanied harmony, barbershop style, one of the few forms of music native to the United States.  Performances and competitions develop members' confidence and pride in their achievements.  International membership of nearly 30,000 women includes choruses in most of the fifty United States, as well as in Australia, Canada, England, Finland, Germany,  Japan, Mexico, New Zealand, Scotland, Sweden, Wales, and the Netherlands.  The organization encompasses more than 1,200 registered quartets and 600 choruses.