Nāgasvarāvaḻi, is a rāgam in Carnatic music (musical scale of South Indian classical music). It is an audava rāgam (or owdava, meaning pentatonic scale). It is a janya rāgam (derived scale), as it does not have all the seven swaras (musical notes).
Nāgasvarāvaḻi is a symmetric rāgam that does not contain rishabham or nishādam. It is a pentatonic scale (audava-audava ragam in Carnatic music classification - audava meaning 'of 5'). Its ārohaṇa-avarohaṇa structure (ascending and descending scale) is as follows (see swaras in Carnatic music for details on below notation and terms):
(the notes used in this musical scale are shadjam, antara gandharam, shuddha madhyamam, panchamam, chathusruti dhaivatam)
Nāgasvarāvaḻi is considered a janya rāgam of Harikambhoji, the 28th Melakarta rāgam, though it can be derived from other melakarta rāgams, Chakravakam, Sooryakantam, Shankarabharanam, Vagadheeswari or Shoolini, by dropping both rishabham and nishādam.
Nāgasvarāvaḻi rāgam has a few compositions in classical music.
This section covers the theoretical and scientific aspect of this rāgam.