Anonymous 4 is a female a cappella quartet, based in New York City. Their main performance genre is medieval music, although they have also premiered works by living composers such as John Tavener and Steve Reich.

Anonymous 4 has performed in cities throughout North America, and have been regulars at major international festivals. They decided to make the 2003-2004 season their last as a full-time recording and touring ensemble, although special projects (such as their Gloryland CD and their "Long Time Traveling" Tour) continue to bring them together on occasion.

The name of the group is a pun on the name of an anonymous English music theorist of the late 13th century, Anonymous IV, who is the principal source on the two famous composers of the Notre Dame school, Leonin and Perotin.

Anonymous 4 currently includes:

Marsha Genensky

Susan Hellauer

Jacqueline Horner

Johanna Maria Rose

Former member:

Ruth Cunningham

Official website: http://www.anonymous4.com/.

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