Nat Bhairav
Nat Bhairav is a Hindustani classical heptatonic raga of Bhairav Thaat. Traditionally it is a morning raga. It is one of the most important ragas of the Bhairav anga.
This raga is not be confused with the Natabhairavi, the 20th Melakarta of Carnatic Music. Sarasangi, which is the 27th Melakarta in Carnatic music, has the same scale as the Nat Bhairav in Hindustani music. In Western theory it is called the harmonic major scale.
Theory
Writing about the musical theory of Hindustani music is fraught with complications. Firstly, there have been no set, formal methods of written notation. Secondly, Hindustani music is an aural tradition, and therefore writing is not an essential part of learning. However, Nat Bhairav is a morning raga. The raga reflects the mood of slight pathos with heroic exuberance.Arohana and Avarohana
ArohanaSa, Re, Ga, Ma, Pa,, Ni, Sa'
C, D, E, F, G, A♭, B, C'
Avarohana
Sa', Ni,, Pa, Ma, Ga, Re, Sa
C', B, A♭, G, F, E, D, C
Pakad or Chalan
-Ni-Sa'Sa-Re-Sa
Sa-Re-Ga-Ma--Pa, Ga-Ma-Re-Sa, Re-'Ni-'-Sa
While the above is true, modern treatment of the Raga is slightly different. The basic Chalan of the Raga has de facto shifted the Vadi-Samvadi duo to Re-; and the basic characteristic phrase has become Re--Re, Re-Ga, Ga-Ma, Ma-Pa; Ma-Ni-Pa, Ga--Re-Sa; Sa-'NiSa-'.
It is believed that this Chalan brings out clearly the Nat-ang in Nat Bhairav.