‘Thaat’ is the method of dividing ragas in Hindustani classical music. The main raga of each ‘Thaat’ is called the ‘Ashraya’ raga and other ragas are ‘Ashrita’ ragas. This book is an attempt to make the readers aware of the ‘Ashraya’ ragas. The author has very clearly presented the concept of ‘Ashraya’ raga and its significance.