These short commentaries of the Sangeet Granthas of the past ages form a very valuable contribution to the music literature of modern times. These short commentaries of the Sangeet Granthas of the past ages form a very valuable contribution, to the music literature of modern times. The old system of Grama - Moorchhana - Jati was abandoned and gave place to the Raga - Ragini or the lanya - Janak (Thata-Raga) theory. In the Northern India the Mahomedan rulers proved to be great patrons of music and dancing. They brought with them their own music which, as it always happens in this country, was assimilated into the then Hindu music. New melodies, new styles of interpretation, new types of songs, new Talas were introduced. In the north even perhaps at Somnath?s time a diatonic scale had already been adopted as the standard scale. Ragavibodh was therefore difficult for the northerners to understand. These articles deal with over a dozen Granthas and give enough information which makes it quite easy to understand them.