  Evolution of cosmic perturbations in two-component ultralight axionic
universes is investigated. We present the first spectral computation of
perturbations in multi-component universes. A particular case composed of light
extreme axions and free massive particles offers a possibility for the
formation of very high-redshift massive galaxies, which are normally required
to host massive early quasars. Our computation retains the information of
perturbed velocities for individual axion components, an information that opens
a new avenue for setting up initial conditions for future axion dark matter
simulations.
