  We study multi-particle state contributions to the QCD two-point functions of
pseudo-scalar quark bilinears in a finite spatial volume. For sufficiently
small quark masses one expects three-meson states with two additional pions at
rest to have the lowest total energy after the ground state. Using chiral
perturbation theory, we find the amplitude of this state to be too small to be
seen in present-day lattice simulations. We speculate that curvature in the
effective mass plot extracted from the pseudo-scalar density two-point function
instead corresponds to a genuine resonance, the \pi(1300).
