  We study spectral statistics of lattice modes in a disordered crystal and in
a crystal with a complex unit cell. The correlations of the eigenmode
frequencies of a block of a disordered solid is found to obey the GOE
Wigner-Dyson statistics. In contrast, the set of eigenfrequencies of a crystal
with a complex unit cell taken at the same point ${\bf Q}\not=0$ in the
Brillouin zone exhibit correlations specific to the GUE universality class.
