  The suppression of high-pT single-hadron spectra in heavy-ion collisions is
usually interpreted as due to parton energy-loss of high-momentum quarks and
gluons propagating in the plasma. Here, we discuss to what extent this partonic
picture must be complemented by a picture of medium-modified hadronization. In
particular, we show how color-exchange with the medium modifies the properties
of color singlet-clusters arising from the parton branchings, producing a
softening of the hadron spectra.
