By Bhai Avtar Singh and Bhai Gurcharan Singh
 
The raags play an instrumental role in the way in which gurbani is communicated through forms such as kirtan. Each raag prescribes it’s own tone and melody, often applicable to certain times of the day. 
 
Understanding the intricacy and application of these raags is an art and skill. “Gurbani Sangeet Pracheen Reet Ratanavali” by Bhai Avtar Singh and Bhai Gurcharan Singh is one of the few books that outlines the procedures, tunes and techniques of singing gurbani kirtan. This work is essential in preserving the art of Sikh musical heritage and gurbani kirtan.