Ratnangi (pronounced ratnÃÂngi, meaning the one with a gem-like body) is a rÃÂgam in Carnatic music (musical scale of South Indian classical music). It is the 2nd melakarta rÃÂgam (parent scale) in the 72 melakarta rÃÂgam system of Carnatic music. It is called Phenadhyuti in Muthuswami Dikshitar school of Carnatic music.
It is the 2nd rÃÂgam in the 1st chakra Indu. The mnemonic name is Indu-Sri. The mnemonic phrase is sa ri ga ma pa dha ni. Its ' structure (ascending and descending scale) is as follows (see swaras in Carnatic music for details on below notation and terms):
The scale uses the notes shuddha rishabham, shuddha gandharam, shuddha madhyamam, shuddha dhaivatham and kaisiki nishadham. As it is a melakarta rÃÂgam, by definition it is a sampoorna rÃÂgam (has all seven notes in ascending and descending scale). It is the shuddha madhyamam equivalent of JalÃÂrnavam, which is the 38th melakarta scale.
Phenadhyuti is the 2nd Melakarta in the original list compiled by Venkatamakhin. The notes used in the scale are the same, but the ascending scale is different.
Ratnangi has a few minor janya rÃÂgams (derived scales) associated with it, of which Revati is very popular. See List of janya rÃÂgams for full list of scales associated with Ratnangi.
Here are a few common compositions sung in concerts, set to Ratnangi.
The following composition is set to Phenadhyuti.
This section covers the theoretical and scientific aspect of this rÃÂgam.
Ratnangi's notes, when shifted using Graha bhedam, yield two other melakarta rÃÂgams, namely Gamanashrama and Jhankaradhwani. Graha bhedam is the step taken in keeping the relative note frequencies same, while shifting the shadjam to the next note in the rÃÂgam. For further details and an illustration, refer to Graha bhedam on Ratnangi.