  A complexity classification scheme is developed from the fractal spectra of
spin-glass chaos and demonstrated with multigeographic multicultural music and
brain electroencephalogram signals. Systematic patterns are found to emerge.
Chaos under scale change is the essence of spin-glass ordering and can be
obtained, continuously tailor-made, from the exact renormalization-group
solution of Ising models on frustrated hierarchical lattices. The music pieces
are from Turkish music, namely Arabesque, Rap, Pop, Classical, and Western
music, namely Blues, Jazz, Pop, Classical. A surprising group defection occurs.
