I would actually call out Japan first, they still have the 2nd largest market by revenue with quite a distance [1]. It's more than half of what the US music market makes.
[1] https://en.wikipedia.org/wiki/Global_music_industry_market_s...
Re:David Bowie Has Died
by CWuestefeld on Monday January 11, 2016 @12:50PM
(#10881900)
Last I was in Shanghai, about 3 years ago, there were Maroon 5 posters all over the subway.
It seems to me that, strangely enough, Chinese pop culture actually aligns much more to the USA than the Japanese one. Japanese tend to prefer everything domestic first, especially so in games and music, movies a bit less so but it's still a much larger purely domestic film market compared to EU (if you don't count US financed films made in EU countries).
Remember though, that SEA is just part of Asia. China and India are huge music markets. Additionally, Japan and Korea have very strong, local music scene as well.