R G R S In this raga, when the artist improvises, when ascending in pitch after the Pa (Panchamam), the Ma (Madhyamam) needs to be sung, or the raga will be wrong. So with a raga like Sahana or Anandabhairavi, Purvi Kalyani, etc., which have Dhattu (jumping) swarams in their arohanam and/or avarohanam the Kalpanaswaram is harder to master and perform. References Carnatic music terminology