Expect to hear none and you won't be disappointed... that would be my opening piece of advice.
I've been travelling around SEA for 9 months and am now living in Vietnam; I've never heard drum and bass played apart from by myself, anywhere. I have however met a few heads here and there, so not all hope is lost!
With regards to House, Techno and Trance, you're more likely to run into these, but for the most part expect trap remixes of Justin Bieber songs and EDM bangers. SEA people have hideous taste in music, absolutely hideous and unfortunately there don't seem to be a vast number of people complaining, in fact I'd liken a lot of nights out to freshers week at Universities.
The one upside is that when you do stumble into a good venue / find a group of people who actually have taste it's a wonderful moment. Travelling has taught me that the majority of people on this planet will listen to just about anything, I feel bad for them...
Bangkok does have a good little club called 'Glow' however I'm yet to make it down. Chiang Mai is mostly utter paff, but there is a small reggae bar, a small little bit in the main 'party' place where they seem to play techno and a bar which does an live music night a few times a week, so there's stuff to check out.
I guess cities do tend to have small pockets of good music, but you have to either live there or know someone who does to really capitalize on it. Give me a shout if you're in Hanoi (Vietnam) - dom stanway-williams (facebook). I'll take yah too something decent!
Enjoy yah travels broooo x
