Anandabhairavi is a very old melodious ragam of Carnatic music. It is found even in Indian folk music. It is a form of happiness.
It is a janya ragam (i.e. it inherits some of the properties from one of the 72 melakarta ragams) of the 22nd Melakarta karaharapriya (literally lovely to ears), although some suggest that it is janya of Natabhairavi.
Anandabhairavi ragam is also a bhashanga raga, since it uses more than one anyaswaram (alien swara in English language). Anyaswara of a raga is the swara which does not belong to the arohana avarohana of its mela (thai) raga but it is sung in prayogams (raga alopana, kalpanaswara)/ it may be found in arohana/avarohana itself (like Bhairavi).
The three anyaswaras of Anandabhairavi are "ga(2)", "da(1)" and "ni(2)". But all these annyaswaras occur only in prayogas not in arohana avarohana. "ga(2)" occurs in "ma pa ma ga ga ma", "da(1)" occurs in "ga ma pa da". Generally "ni(2)" is not sung these days. Surprising thing is Tyagaraja and Muthuswami Dikshitar do not use any of the annyaswara in their compositions.
Anandabhairavi also has unique swara patterns both in manodharma and in its compositions. The popular patterns are SGGM, SP, and SGMP. The musician isn't allowed to stay long on Nishada, this characteristic distinguishes it from Ritigowla.