Every raga consists of shadja (otherwise named adhara sadja which is arbitrarily chosen by the performer) which is taken as the beginning and end of the octave, and an adhista which is either the swara Ma or the swara Pa. The adhista divides the octave into two parts (anga)- Purvanga and Uttaranga. Every raga has a vadi which is the most prominent swara and a samvadi which is consonant with the vadi (always from a different anga from vadi). Samvadi is the second most prominent swara in the raga.