American A Cappella Alliance
The American A Cappella Alliance, Inc. (AACA) promotes a cappella ensemble singing of all styles of popular music. AACA sponsors an annual concert festival called Spring Sing where members and guest groups share their newest repertoire.
 Mission Statement
AACA strives to
- foster and support individual and community appreciation and understanding of the history and development of unaccompanied choral music, especially through the formation, promotion, and preservation of contemporary a cappella ensembles as cultural and educational resources in North American communities;
- encourage individual participation in and community support for such groups through education, demonstration, and presentation of public programs; and
- carry on any and all activities as may be helpful or appropriate to the foregoing goals and purposes.
 Member Groups
An avocational a cappella vocal group of approximately four to 20 members that prepares and strives to perform with excellence a repertoire of contemporary, popular, folk, novelty, and vocal jazz music.
An AACA member group ascribes to the purposes and interests to which AACA is dedicated. It is enthusiastic about furthering these interests and helping to create a climate in which the Spring Sing tradition will prosper.
- Augmented Eight
- Grace Notes
- Jersey Transit
- Lake Shore Jive
- New Wizard
- Oil Combination
- Off Sounders