  Globular clusters will be present at high redshifts, near the very beginning
of the galaxy formation process. Stellar evolution ensures that they will be
much more luminous than today. We show that the redshift distribution at
nano-Jansky levels should be very broad, extending up to the redshift of
formation. A bracketing range of choices for the redshift of formation,
spectral energy evolution models and population density evolution, leads to the
conclusion that the sky densities should be around 10^7 per square degree at
1nJy (m_AB=31.4 mag) in bands around 4 microns. Such high sky densities begin
to present a confusion problem at these wavelengths to diffraction limited 6m
class telescopes. These star-like, low metallicity, clusters will be a
significant foreground population for ``first light'' object searches. On the
other hand they are an exceptionally interesting ``second light'' population in
their own right. Depending on the details of galaxy assembly, the clusters will
have a noticeable cross-correlation with galaxies on scales of about 20 arcsec,
or less, depending on the details of the buildup of galaxy assembly after
globular cluster formation. High redshift globular clusters will be an
accessible, direct, probe of the earliest stages of the formation of galaxies
and the buildup of metals in the universe.
