The scales of Raga Kalyana Vasantam are as follows :
Aarohanam (Ascending) : S G2 M1 D1 N3 S’
Avarohanam (Descending) : S’ N3 D1 P M1 G2 R2 S
It is a Janya raga, derived from Keeravani which is 21st on the Melakarta Scale (see below).
This joyful raga is propitious and is said to bring beneficial results to its listeners. It is an evening raga especially appropriate to be sung in spring, thanks to its name, and also at weddings. Though there are not many compositions in this raga, the few which are well known are Nadaloludai by Tyagaraja, Sri Venkatesham Bhajami by Muthuswami Dikshithar, Deva Jagannatha by Gopalakrishna Bharati and Innu Daya Barade by Purandaradasa.
Note : The 12 notes in the octave are named as below. Please note that C is used as Sa for the sake of simplicity as the scale is relative in Carnatic Music. Also note that the scales paint only a superficial picture of the raga as the gamakas(ornamentations) are a very important part of a raga.