Joan La Barbara

Joan Linda Lotz La Barbara (born June 8, 1947) is an American vocalist and composer known for her explorations of non-conventional or "extended" vocal techniques. Considered to be a vocal virtuoso in the field of contemporary music, she is credited with advancing a new vocabulary of vocal sounds including trills, whispers, cries, sighs, inhaled tones, and multiphonics (singing two or more pitches simultaneously).