"From the opening ‘Gaude, Virgo, Salutata’ chant sequence to the final ‘Ave Maris Stella’ hymn,
the performance had all the polish, dynamic suppleness and warmth of tone
that have always been Anonymous 4’s hallmarks."
— New York Times

Ultimately, Anonymous 4 made 1,500 appearances in forty-nine of the fifty United States and in thirty-five other countries. The quartet made composer commissions from Pulitzer Prize-winner David Lang, Sir John Tavener, Steve Reich, and Sir Peter Maxwell Davies, developed crossover collaborations with newgrass stars Darol Anger and Mike Marshall, and with old-time music master Bruce Molsky, sang the voice of Joan for Richard Einhorn’s multi-media work, Voices of Light, and appeared on Chris Tin’s Grammy Award winning recording, Calling All Dawns. The A4 girls made twenty-one Billboard Classical Chart-topping, award-winning recordings of medieval, contemporary, and American music on the harmonia mundi usa label, and made guest appearances on the Sony Classical, Cantaloupe, and Tinworks labels.

Anonymous 4's last concert took place on December 22, 2015 at the Metropolitan Museum of Art in New York City.

Four women got together for a music reading session one afternoon in New York City in the spring of 1986; we  wanted to hear what medieval chant and polyphony would sound like when sung by female voices . . . 

And that was the start of Anonymous 4. From the beginning, we committed ourselves to thematic programming and a collaborative process. Our original mission was to explore chant and polyphony of the Middle Ages. Eventually, we expanded our repertoire to include contemporary music and American roots music as well.

Read Anonymous 4's farewell article (with shoutouts from all 5 of the 4) in the Winter 2016 edition of Early Music America Magazine.

1986 - 1998: Ruth Cunningham, Marsha Genensky, Susan Hellauer, Johanna Maria Rose (founding members)

1998 - 2007: Marsha Genensky, Susan Hellauer, Jacqueline Horner-Kwiatek, Johanna Maria Rose

2007 - 2015: Ruth Cunningham, Marsha Genensky, Susan Hellauer, Jacqueline Horner-Kwiatek