Promote your site where there is lot of U.S.,U.K. & Canadian ( Indian visitors) which will attract actually Indians but residing there , that will make you earn good even from low keyword Music & even you can try adding some other good entertainment things to your site too that will make the difference.
Hmm i think in India adwords competition is not that much but i have not thought that it will be so low like 1 cent per click .
I think you are in a bad niche my friend. If I were you I would try and do something with different keywords, that might be why you are getting so little money from your blog.
To clarify what you guys already said: Factors for the CPC of an AD and Increase your CPC. Niche and ROI for the advertiser are the main factors.