Sweet Adelines International is a highly respected worldwide organization of women singers committed to advancing the musical art form of barbershop harmony through education and performances. This independent, nonprofit music education association is one of the world's largest singing organizations for women. Why would I want to join? Singing, friendship and good times are the reasons our members join and stay with the organization. Sweet Adelines sing a combination of upbeat songs and ballads, a refreshing alternative to classical music. If you are, or have been, (or never have been) a member of a choir, Sweet Adelines will be a lively and energetic experience for you..