Charged particle spectra at CMS

We present the plans of the CMS collaboration to measure cross sections and differential yields of unidentified charged particles produced in inelastic proton-proton collisions. The measurements of these basic observables could also serve as an important tool for calibrating and understanding the CMS detector at start-up. The tracking of very low transverse momentum charged particles will be possible down to about $100$ MeV/$c$, with good efficiency and negligible fake rate. The tracklet reconstruction and the pixel counting analysis methods can complement the tracking and lower this limit to about $40$ MeV/$c$.