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
Arohana
Sa, Re, Ga, Ma, Pa, Dha, Ni, Sa'
C, D, E, F, G, A♭, B, C'
Avarohana
Sa', Ni, Dha, Pa, Ma, Ga, Re, Sa
C', B, A♭, G, F, E, D, C
Pakad or Chalan
Dha-Ni-Sa'
Sa-Re-Sa
Sa-Re-Ga-Ma-Dha-Pa, Ga-Ma-Re-Sa, Re-'Ni-'Dha-Sa
While the above is true, modern (20th century) treatment of the Raga is slightly different. The basic Chalan of the Raga has de facto shifted the Vadi-Samvadi (Point-Counterpoint) duo to Re-Dha; and the basic characteristic phrase has become Re-Dha-Re, Re-Ga, Ga-Ma, Ma-Pa; Ma-NiDha-Pa, Ga-(Ma)-Re-Sa; Sa-'NiSa-'Dha.
It is believed that this Chalan brings out clearly the Nat-ang in Nat Bhairav.
Organization and relationships
Related ragas:
As the name suggests, this raga is a combination of Nat and Bhairav (Shah [Bhairav ke Prakar] 1991: 255). It is regarded as one of the varieties of Bhairav. The lower tetra chord has the notes of Nat whereas in the upper tetra chord Bhairav is evident. Therefore, except Komal Dha, all the other notes are natural. The raga comes across as a musical entity with heroic exuberance, along with a slight feeling of pathos.
Samay (Time)
Nat Bhairav is an early morning raga. This raga has a distinct character although at times imbued with impressions of Bhairav.
Seasonality
Nat Bhairav is one of few ragas that can be sung in any season.
Rasa
Nat Bhairav is typically performed with a musical entity with heroic exuberance, along with a slight feeling of pathos.