I found this awesome compilation of Cambodian psychedelic rock from the 60's. It's probably about as good as anything that was produced in the US or UK at the time, I swear. It wasn't until I'd finished downloading everything that I read the rest of the page.
Sinn Sisamouth, Ros Sereysothea, and Pan Ron were big stars in Cambodia before 1975, and all three "disappeared" under the Khmer Rouge, most probably killed like millions of others.
I reeaaly hope that's not the case. But somehow I doubt they made it. At least their music lives on.