  We present new high resolution angle resolved photoemission (ARPES) data for
K$_{0.3}$MoO$_3$ (blue bronze) and propose a novel theoretical description of
these results. The observed Fermi surface, with two quasi-one-dimensional
sheets, is consistent with a ladder material with a weak inter-ladder coupling.
Hence, we base our description on spectral properties of one-dimensional
ladders. The marked broadening of the ARPES lineshape, a significant fraction
of an eV, is interpreted in terms of spin-charge separation. A high energy
feature, which is revealed for the first time in the spectra near the Fermi
momentum thanks to improved energy resolution, is seen as a signature of a
higher energy bound state of soliton excitations on a ladder.
