Thanks for your comments guys. My friend has sent me this link which provides some traditional rules/guidelines for this specific type of music. But I still don't see how the music that comes out can be affected by the time of the day you play it. I do agree that the environment you are in may influence your mood and thus the type of music that comes out. But the key is that it is your mood.
kumaraditya2210.hubpages.com/hub/Seasons-Timings-of-Ragas-in-Indian-Classical-Music
|