 Bilaval is one of the raags that is in the Sikh tradition from northern India, and is part of the Sikh holy scripture (Granth), the Sri Guru Granth Sahib.Every raga has a strict set of rules which govern the number of notes that can be used; which notes can be used; and their interplay that has to be adhered to for the composition of a tune.In the Sri Guru Granth Sahib, there are a total of 31 raga compositions.