Carnatic music is an impromptu style of live music with its roots from ancient vedic music. Its a pretty neatly organized, systematic set of rules with focus on improvisation and that's what appealed to me about it.
I've been self-learning about carnatic music since the past 4 years or so with about 5 months of formal training from K.N.Shashikiran that I discontinued due to lack of time for formal training. I typically end up grokking stuff over intense practice sessions, albeit not regular ones. For instance, at the time of this writing, I played my acoustic guitar for over 7 hours in the past 3 days and I haven't touched the guitar in the past 2 days.
I intend to, some day, create some articles on this wiki out of the blog posts that I've made earlier on music in general and several on Carnatic music in particular.