Thorny compositions that sound as if female teen punkers the Shaggs received doctorates in the music of 12-tone composer Alban Berg, and then rewrote their Philosophy of the World.... Carefully notated structures and interplay morph effortlessly into free improvisation that is intelligent and expressive, but never self-indulgent. Also featuring intense lyrics sung with their clear and melodic voices, the two women make transcendent chamber music outside of any genre.