  QCD superconductors in the color-flavor-locked (CFL) phase support
excitations (generalized mesons) that can be described as pairs of particles or
holes (rather than particle-hole) around a gapped Fermi surface. In weak
coupling and to leading logarithm accuracy the scalar and pseudoscalar
excitations are massless and the vector and axial-vector excitations are
massive and degenerate. The massless scalar excitations are combined with the
longitudinal gluons leading to the Meissner effect in the CFL phase. The mass
of the composite vector excitations is close to twice the gap in weak coupling,
but goes asymptotically to zero with increasing coupling thereby realizing
Georgi's vector limit in cold and dense matter. We discuss the possible mixing
of the composite scalar and vector excitations with the gluons, their possible
coupling to the modified photons and their decay into light pseudoscalars in
the CFL phase. The issue of hidden gauge-symmetry in the QCD superconductor is
critically examined. The physical implications of our results on soft dilepton
and neutrino emission in cold and dense matter are briefly discussed.
