Indian Music
Indian classical music is principally based on melody and rhythm, not on harmony, counterpoint, chords, modulation and the other basics of Western classical music.
One should not listen to Indian music and judge it in terms of Western music or any other musical form. It would be like judging Beethoven or Brahms in terms of Raga (the basis of Indian melody) and Tala (the basis of Indian rhythm). Ideally, the western listener is requested to forget counterpoint, harmony, and mixed tone colours and to relax into the rhythmic and melodic pattens of a great cultural heritage.
Each melodic structure of Raga has something akin to a distinct personality subject to a prevailing mood. Early Indain writers on music, carried this idea further and endowed the Ragas with the status of minor divinities, with names derived from various sources, often indicating the origin or associations of the individual Ragas. In theoretical works on music each Raga was described in a short verse formula, which enabled the artiest to visualise its essential personality during meditation prior to the performance. This borrowing of the meditational technique used in Hindu worship enabled the musician to enter into the mood of a particular Raga and thus perform is successfully.
SHRUTI AND SAPTAKA
The Indian musical scale is said to have evolved from 3 notes to a scale of 7 primary notes, on the basis of 22 intervals. A scale is divided into 22 shrutis or intervals, and these are the basis of the musical notes. The 7 notes of the scale are known to musicians as Sa, Ri, Ga, Ma, Pa, Dha and Ni. These 7 notes of the scale do not have equal intervals between them. A Saptak is a group of 7 notes, divided by the shrutis or intervals as follows --
Sa Re Ga Ma Pa Dha Ni
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
The first and fifth notes(Sa and Pa) do not alter their positions on this interval. The other 5 notes can change their positions in the interval, leading to different ragas.