High Quality Content by WIKIPEDIA articles! A that (also transliterated as thaat) is a mode in Hindustani music. Thats always have seven different pitches (called swara) and are a basis for the organization and classification of ragas in North Indian classical music. The modern that system was created by Vishnu Narayan Bhatkhande in the early decades of the twentieth century. Bhatkhande modeled his system after the Carnatic melakarta classification, devised around 1640 A.D. by the musicologist Venkatamakhin. Bhatkhande visited many of the gharanas (schools) of North Indian classical music, conducting a detailed analysis of Indian raga. His research led him to a system of ten thats, each named after a prominent raga associated with it. Many correspond to one or other of the European church modes. They are listed here according to their pitches; lower-frequency pitches are represented with lowercase letters and higher-frequency pitches with uppercase letters.

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