The King's Singers

The King's Singers are a British a cappella, two-time Grammy Award-winning vocal ensemble who celebrated their 40th anniversary in 2008. Their name recalls King's College in Cambridge, England, where the group was formed by six choral scholars in 1968. In the United Kingdom, their popularity peaked in the 1970s and early 1980s. Thereafter they began to reach a wider international audience, appearing frequently on The Tonight Show Starring Johnny Carson in the U.S. In 1987, they were prominently featured as guests on the Emmy Award winning ABC-TV special Julie Andrews: The Sound Of Christmas. In February 2009 their CD, Simple Gifts, won a Grammy Award for Best Classical Crossover Album. In February 2012 they won Best Choral Performance at the 54th Grammy Awards along with Eric Whitacre for the album "Light and Gold," on which they performed "The Stolen Child," written for the group by Whitacre.

source: Wikipedia