  Using the Gell-Mann-Oakes-Renner (GOR) relation and semi-classical arguments,
we show that the bulk quark spectrum in QCD exhibits a variety of regimes
including the ergodic one described by random matrix theory. We analyze the
quark spectral form-factor in the diffusive and ballistic regime. We suggest
that a class of chiral transitions in QCD is possibly of the metal-insulator
type, with a universal spectral statistics at the mobility edge.
