Raga Bilaskhani Todi or Vilaskhani Todi
Legend has it that this raga was created by Bilas Khan, son of Miyan Tansen, after his father's death. It is said that while trying to sing Todi, his father's favorite raga, in the wake of his father, Bilas was so grief-stricken that he mixed up his notes. That gave birth to this raga, and that Tansen's corpse moved one hand in approval of the new melody. (There is a similar legend, differing only in detail, about Tansen's Todi.)
This Raga belongs to Bhairavi Thaat. Raga Bhairavi and Raga Komal-Rishabh Asawari are nearest to Bilaskhani Todi. This is a very melodious but difficult Raga to sing and requires much Riyaaz. This Raga can be expanded in all the three octaves. The atmosphere created by this Raga is deep and soothing.
Bilaskhani Todi is a Hindustani classical raga. It is a blend of the ragas Asavari and Todi, and has a close affinity with Komal Rishabh Asavari. The Hindustani classical raga Bilaskhani Todi is an example of the flaws of the Bhatkhande thaat system because it is classified under the Bhairavi thaat based on the notes it uses, but it is actually a type of Todi, and permitting any Bhairavi during a performance kills the raga.
Although Nishad is Varjya in Aaroh, it is sometimes used as Anuwadi Swar like: r' n S r' g' or r ,n S r. This is a Meend Pradhan Raga. The Gandhar used in this Raga is of lower Shruti as in Raga Todi. In this Raga, Shadj (Sa) is usually omitted in Avroh like: S' r' n d ; d S' r' g' r' n d ; g P d m g r ; g r ,n ,d S.