It can be found in Bhai Avtar Singh ji anf Gurcharan Singh ji's books Gurbani Sangeet Prachin Reet Ratnavali ..I can't remember the volume right now but I think its probably n the second one under the Raag title of Raag Parbhati.Wahegurru Ji Ka Khalsa Waheguru Ji Ki Fateh🙏
@@GurmukhSingh-kw3qf in singing gurbani, the sum (should) fall on a focal phrase. Anagat/atit in kirtan is nothing more than ignorant and distasteful and disrespectful.