  Starting from a first principle Salpeter equation we computed the
heavy-heavy, light-light and heavy-light quarkonium spectrum and the ground
light-light Regge trajectories. We neglect spin-orbit structures and exclude
from our treatment the light pseudoscalar states which in principle would
require the use of the full Bethe-Salpeter equation due to the chiral symmetry
breaking problem. We found a good agreement with the experimental meson masses
and straight Regge trajectories with the right slope and intercepts. Since the
parameter are completely specified by the heavy quarkonium spectrum and by high
energy scattering, for what concerns light-light and light-heavy quarkonium
systems our calculation is essentially parameter free.
