In 1650 AD, Pandit Ahobal wrote ‘Sangeet Parijat’, a very important manuscript on Classical Hindustani Music. He founded the shudha and vikrit swars by differentiating the spaces (gunottar) on the strings (frets) of the Veena. According to Pt. Alochan, the ‘Shudha Thaat’ of Pt.Ahobal is currently known as ‘Kafi Thaat’. Pandit Ahobal has mentioned 29 swars including the shudha and vikrit swars in his manuscript. He has named the thaats but he has not categorised them. 192 ragas are mentioned in Sangeet Parijat. One finds the description of the aroha, avaroha, grahas, nyasas, anshas and murchanas of swars, of each of the 192 ragas. According to him, wherever the nyasa and ansha swars are not mentioned, they should be taken as Shadaj. The group of swars (swar samudaya) with which the raga commences, is labelled as ‘Udgrahakaarak’ taan by him. After the description of each raga, he has also written the Udgrahakaarak taan of the raga in his manuscript. Sangeet Parijat was translated into Farsi (Persian language) by Shri Dinanath in 1924 and into Hindi by Shri Kalinga in 1941. Sangeet Parijat in its original version was published by Sangeet Karyaalaya, Haathrasa.