H O W T O I D E N T I F Y R A G A S?
(Raga identification is really an art. It's difficult to precisely put down how one goes about doing it. What follows is only an attempt to indicate some of the standard approaches.)
is there an "algorithm" for identifying ragas? Yes, of course.(Otherwise, who can identify ragas?) Only that some steps of the algorithm are really tough and yes that should be algorithm"s". At least three of them! (and more by mixing these three algorithms.) let's take thm one by one. The toughest to the easiest...
1) This algorithm is a rigorous one. Yu listen to the music (in which yu want to identify the raga)& "swaramize" it, i.e. get the swaras corresponding to the music.During this process, yu'll see what swaras go up and down. In other words, you'll get to know the "aarohanam"(swaras going up the scale)and "avarohanam"(swaras down the scale). Simply match these with the definition of ragas, yu get the name. ( If yu remember the characteristic phrases of the raga, this step is easy.)
The crucial and a very difficult part here is the swaramizing(could nt get any word here 😊 ) stage. This needs (most of the time) a formal training in music or a rigorous practice in music. For some people, it may even take years! So.. for the uninitiated, pl don't try this. But without any doubt this is the only foolproof (albeit slow) method.
2) This algorithm needs a keyboard (or some other music instrument). Basically, yu follow Algorithm-1 but the swaramizing ( 😊 ) is somewhat simplified. Yu do not have to get the swaras by yurself, the keyboard will take care of it. Yu just have to find the notes that "resonate" with notes of the music.All the other steps are almost the same as Algorithm-1. So.. yu can get the notes corresponding to the music and hence the notes up and down the scale. Matching with raga definition, yu get the raga name.
There is a catch here. Yu could have noticed, i suddenly switched over to "Notes" instead of Swaras. Yes.. yu get only the notes, NOT the swaras. Wht i mean is, yu may not be able to get the correct swara placings, i.e. the basic sruti may be difficult to trace. (If there is a tambura/sruti-box with the music yu listen, no problem.) So.. if yu take the wrong sruti, yu will end up (only exception is Raga Gopriya)in the wrong swaras and consequently an incorrect raga name. There r many songs (especially film songs) on ragas Mohanam, Hindolam,etc(these ragas form a so called "grahadeda" group) that'll easily make yu do such mistakes. One more difficulty is, some of the ragas with "vakra" phrases may let you conclude wrongly, because yu have traced only the notes. For e.g., a Yaman Kalyan piece may let yu conclude as Yaman/Kalyani.
3) This is the simplest and the method usually suggested by many people. (it's useful in situations where yu have no access to a keyboard. e.g, How can yu take a keyboard to a concert?) The algorithm is based on identifying "similarities" between songs of the same raga. Yu ask your gurus to tell yu songs of the same raga and listen to thm carefully. Yu start noting similarities, then yu generalize thm(properly) and form a picture of the raga in your mind.(This may tak quite sometime for some ragas.) Then, whenever the raga is played, yu;ll naturally see some "patterns match" (depending on how many songs yu've heard in the raga
and how far yu've generalized it. of course, the raga difficulty also comes in.), then yu can associate a name for the raga yu know. I warn you, this conclusion always comes "with some probability". yu cannot be sure unless yu have listened to music for years or the raga is very simple.
There are 2 crucial things in this algorithm. (They are the secrets for the success!)
1. yu should listen to the "correct" music for each raga
2. yu should really listen to them. i.e. very very carefully, if possible
ask your gurus or someone who knows to tell yu, at which places the raga shows itself clearly.
The time to identify a raga using Algorithm-3 without any doubt depends on these two steps and yur "inclination" to grasp the raga.
This algorithm works most of the time for all standard ragas and is the easiest and quickest method of all. i have seen even big gurus use this method. Of course, they wont simply follow. Usually, they use this and confirm by using Algorithm-1. This hybrid algorithm, according to me, is the best way to identify ragas. The novices can still use Algorithm-3 and be happy with it. (Only for some very uncommon ragas, the algorithm will fail.) To stress it again, the most important thing here is you should keep listening, listening and listening. Otherwise, the "picture" goes out of yur mind or gets corrupted.
There is a further short cut to algorithm-3, if yu have the habit of listening to film songs. The film songs, for many ragas, give yu the picture very fast, because many of these yu have listened many many times or simply because they are catchy. Again a warning, yu should follow only the "right" film songs. Otherwise,they'll unnecessarily mislead yu. But, they are definitely short-cuts! (For some ragas, I still use film songs as references.) Still, according to me, yu cannot get the full picture of the raga unless yu listen to the purely classical versions. The latter is a must, no other way.
(i have seen people getting the "picture" easily, e.g. those who have been listening to classical music from childhood, but not being able to identify the raga name. Well.. for all purposes, these people have "identified" the raga. They have to only associate the name with picture of the raga they "see". This is easy to do after a bit of memorization. It's just like associating a name with a person's face you recognize!)
To conclude, raga identification is not really difficult! Anyone can identify, provided he/she listens regularly(and patiently) to good classical music. No theory, no books needed. Yu will need all the knwledge only if you want to appreciate and master the raga in depth.