Using the Gell-Mann-Oakes-Renner relation and semiclassical arguments,
we show that the bulk quark spectrum in QCD exhibits a variety of reg
imes including the ergodic one described by random matrix theory. We a
nalyze the quark spectral form factor in the diffusive and ballistic r
egime. We suggest that a class of chiral transitions in QCD is possibl
y of the metal-insulator type, with a universal spectral statistics at
the mobility edge. [S0031-9007(98)06589-2].