 The Bilaval thaat is equivalent to the Carnatic melakarta raga, Dheerasankarabharanam, as well as the Western Ionian mode (major scale) and contains the notes S R G M P D N S'.The pitches of Bilaval thaat are all "shuddha", or natural.Flat () or sharp () of pitches always occurs with reference to the interval pattern in Bilaval thaat.