ASA, one of the thirty one ragas or musical measures into which compositions comprising the Sikh holy book, Guru Granth Sahib, except the Japu, are cast and in which they are meant to be recited and sung. This raga is important in the Sikh system of music, and is said to have developed from the tune of a folk ballad Tunde Asraje di Var prescribed as the musical key for singing the Sikh morning liturgy, Asa ki Var.Asavari and Asa Kafi are two subsidiaries of Asa employed in the Guru Granth Sahib. Also, more appropriately, it is assigned to the cold season and is meant to evoke a calm mystical mood.
DHUNI, from Skt. dhvani meaning sound, echo, noise, voice, tone, tune, thunder, stands in Punjabi generally for sound and tune. In the Guru Granth Sahib, the term appears in the sense of tune at the head of 9 of the 22 vars (odes) under different ragas or musical measures. Directions with regard to the tunes in which those vars were meant to be sung were recorded by Guru Arjan when compiling the Holy Book. The classical system of Indian music had well established tunes and corresponding prosodic forms; but the var, being basically a folk form, did not have any prescribed order.