talasiga
jaan wrote:
.......
First, there is no ''semi tone'' concept in HCM. By using this word you are implying the western system.
Next you make mention of some "keyboard paradigm'' (whatever the hell that is supposed to be) again implying western theory.
So on the one side you lumped together the komal/teewar nomenclature, the western concept of the semi-tone and the keyboard; and on the other, microtones and fantastic true blue Indian intonation.
Not at all. Mathematics is universal.
When you play your harmonium, a European sourced instrument, you are uusing an instrument with 12 semitones to the octave.
Lets say for example you are playing a piece with B as Sa. There are 12 keys from that B to the next one. Each of those keys makes a sound exactly half way between the one before it and the one after it.
When you play a raaga in B Bilawal scale you will play the following notes
B C# D# E F# G# A# B
Counting the keys from the B and then from each consecutive note we get this
B+2+2+1+2+2+2+1
That is, to go to Re you go up two keys (which represents 2 semitones). So from Sa to Shuddha Re (or "Teevra Re") is a whole tone. Now from Re to Ga the same. Then from Ga to the madhyam it is only one key (one semitone). etc.
Now iif you were playing raaga Yaman, for the Kalyan scale you would play the same keys as above EXCEPT that you would raise your ma by a semitone (by going to the next key) for a teevra Ma which in this case would be the F key.
Now, if you play B Kaafi scale then you would get your komal Ga and komal Ni by playing the D and A keys respectively, each a key or semitone below the respective Bilawal position for them.
In other words you are changing from one scale (thaat) to another with the same Sa by using one or other of the 12 semitone options available in any octave on your keyboard.
jaan, that is why, when you play any music on a harmonium or piano, whether it is Hindustani CM, Afghani folk, Nepalese folk, Balkan or Irish you are subject to a 12 semitone paradigm.
every flute harbours a muse