Purivikalyani is a janya raga from the 53rd mELakarta gamanashrama. It is a Vakra Shadava sampurna raga, i.e. it has six notes on the ascent and seven notes in the descent. purvikalyani has another name Poorvakalyani. The scale mentioned in the Sangeeta Sampradaya Pradarsini is s r g m p D s – S n d p m g r s, which is Gamakakriya and which is also called Poorvakalyani. Despite being a raga that can be rendered at all times, rasikas know that the effect is profound when this raga is rendered just after sunset.
When the Sun fades and all extroversion, entertainment, and distraction is denied to Man, the mind retreats into a state of meditative introversion we call sleep. Thoughts that are unfinished in the mind, during the day, continue throughout the night in the forms of dreams, striving towards their resolution, as part of the brain’s intrinsic mechanism to find order. In a sense then, sleep is Nature’s way of reuniting Man with him or herself, enabling that which lies dormant in the hidden recesses of the mind, to reveal and express itself in secure isolation from the world.