  We present the results for the evolution of transverse momentum spectra for
the jetty and underlying parts of events as a function of multiplicity in pp
collisions at 13 TeV measured at midrapidity ($\left|\eta\right|<0.8$) using
PYTHIA8 event generator. The main characteristic of the approach is that it
reaches to extreme multiplicities not yet explored by the experiments. We
demonstrate that the behavior of both the underlying and hard components are
affected by the multiplicity of the events i.e. the energy density. The
behavior of the spectra at very high multiplicities suggests that the partons
suffer energy loss compensated by an increase in the multiplicity of events.
