Diamanda Galas is an avant-garde vocalist and composer renowned for her extraordinary four-octave range and intensely experimental approach to music that blends opera, noise, and performance art. Born in San Diego in 1955, she has created provocative and politically charged work throughout her career, including her powerful AIDS activism album "Plague Mass." Her uncompromising artistry and theatrical live performances have established her as one of the most distinctive and influential voices in contemporary music.