Hamsanandi

Hamsanandi (pronounced hamsānandi) is a rāgam in Carnatic music (musical scale of South Indian classical music). It is a hexatonic scale (shadava rāgam, which means "of 6"). It is a derived scale (janya rāgam), as it does not have all the seven swaras (musical notes). Hamsanandi is a janya rāgam of Gamanashrama, the 53rd Melakarta rāgam. It has only the invariant panchamam missing from its parent scale, Gamanashrama, like Shree ranjani.

Sohni raga in Hindustani classical music that belongs to the Marwa thaat resembles Hamsanandi.

Hamsanandi is a symmetric scale that does not contain panchamam. It is called a shadava-shadava rāgam, in Carnatic music classification (as it has 6 notes in both ascending and descending scales). Its ārohaṇa-avarohaṇa structure is as follows (see swaras in Carnatic music for details on below notation and terms):

This scale uses the notes shadjam, shuddha rishabham, antara gandharam, prati madhyamam, chathusruthi dhaivatham and kakali nishadam.

Hamsanandi is an evening rāgam. It has ample scope for alapana and swara prasthara (phrases of notes). This scale has been used by many composers for compositions in classical music. It has been used to score film music too. Here are some popular compositions in Hamsanandi.

This section covers the theoretical and scientific aspect of this rāgam.

...
Wikipedia