  We compute free energy of quark matter at asymptotically high baryon number
density in the presence of non zero strange quark mass including dynamics of
pseudo Nambu-Goldstone bosons due to chiral symmetry breaking, extending
previously existing analysis based on perturbative expansion in
$m_s^2/4\mu\Delta.$ We demonstrate that the CFL$K^0$ state has lower free
energy than the symmetric CFL state for $0<m_s^2/4\mu\Delta<2/3$. We also
calculate the spectrum of the fermionic quasiparticle excitations about the
kaon condensed ground state in the regime $m_s^2/4\mu\Delta \sim 1$ and find
that $(m_s^2/4\mu\Delta)_{crit}=2/3$ for the CFL-gCFL phase transition, the
leading order result reported in [1], is not modified.
