Raga Gaud Sarang or Gaur Sarang
Gaud Sarang is a raga in Hindustani classical music that combines characteristics of Sarang and the now extinct raga named Gaud. Unlike most other members of the Sarang family of ragas, Gaud Sarang is assigned to the Kalyan thaat rather than the usual Kafi.
The Indian National Anthem Jana gana mana is sung in the raga Gaud Sarang.It is believed that the National Anthem of India is in raga Bilaval,but it isn't like that. There is a certain svara which is changes the whole raga of the Anthem. In the national anthem, the tivra Madhyama swara is employed. Raga Bilaval doesn't have the svara of tivra Madhyama (obviously, raga Bilaval is the raga of all Shuddha Svaras and no other types of svaras). But raga Gaud Sarang has the tivra Madhyama svara. So from this, the National Anthem of India, Jana gana mana is in raga Gaud Sarang.
Raga Gaud Sarang, though a daytime melody produces effect like the night melodies. The overall impact of the Raga is identical to that in Raga Kedar or Raga Bihag. (Both night time Ragas). The combination of G R m G P R S is considered Rag-Vachak i.e. characteristics of the melody.
Shuddha Madhyam is a prominent note which is Deergh Swar but not a resting note. Pancham and Gandhar are the resting note of the Raga. Like in Raga Kedar and Raga Hameer the Teevra Madhyam (M) is rendered Vakra as shown here:
S' N D P ; M P D P ; M P ; M P G m ; R G R ; m G ; P M D P M P D P ; M P G m ; R G R ; m G ; P R S;
In Aaroh, alternative to M P D N S' one can proceed like ,N S G m P N S' with Shuddha Madhyam (m) as in Raag Bihag. The nature of this Raag is very complex but for rendering fast Taans particularly in Avroh, the Raag Vachak phrase (G R m G P R S) can be omitted and S' N D P m G R S or S' D P m G m R S may be taken. This Raag is full of Shringar Ras.
Credits:
http://www.tanarang.com/
https://en.wikipedia.org/
https://chandrakantha.com/
https://www.raagbased.com/