SSA ji
I happen to come across a site on net and found some knowldge relevant to the question-:Should kirtan always be done in Raag?
Though it may not be correct to call
kirtan a distinct
school of Indian music, it is certainly a distinct
tradition and a new contribution to sacred Indian music. It uses both the classical Hindustani music and
desi(folk) music for divine praise and glorification, and employs the local idiom and poetic forms so as to intensify its appeal to the masses. Its objective is spiritual inspiration and its medium is the emotional appeal of both pure and popular music. By combining the purity of
raga and tala with correct intonation and feeling, its appeal extends even to highbrow musicians.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=8657Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=8657
In
kirtan, more important than the musical element is the feeling of love and devotion of the disciple. Even the best and perfect melody, unless accompanied by true belief and sincere feeling for God, may be of no avail. According to the Gurus, mere technical perfection of musical rendering and vocal skill is not
kirtan.
I hope this may be of some help i just copied and pasted it from the site on net .