I've had the Cambodia Rocks! Compilation since 2007. Here's a selection by Sinn Sisamouth and Srolan Srey which even though it is clearly influenced by Santana also has it's own thing going on. Also, nearly ALL of the people invilved in the Khmer Rock scene in the 60's and 70's were killed off by the Khmer Rouge.
[youtube]http://www.youtube.com/watch?v=0KQ8ydsEhks[/youtube]
Also, I've had The Thai Orchestra album since about the same time, and even though it's titled Thai, I've had people from Thailand and Cambodia tell me that it's actually Laotian, which is still quite close to being Thai in of itself.
[youtube]http://www.youtube.com/watch?v=lrxC5ecn9gg[/youtube]
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When There's No There to get to, I'm so There!