Pish-Radif lessons do not include Dastgâh-e Râst va Panjgâh or Dastgâh-e Râstpanjgâh because it is the last lesson of the twelve systems of Radif to teach how to do the modulation in classical Persian music using the sub-systems of the other eleven systems. It will be possible when the students are familiar with all the other open and closed Gushehs of the other Dastgâhs and Âvâzes by heart.