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You don't have to go all the way to Thai music. Rolling Stone has been _the_ "Anglo Saxon rock music between 1950-1980s is the only music out there" publication till recently. Until the last few years there's been almost no hip hop, almost no electronic music, jazz is relegated to some token pics, etc.
1) Tom Jobim: Stone Flower
2) Os Novos Baianos: Acabou chorare
3) Joao Gilberto, Stan Getz, Tom Jobim, Zimbo Trio: Getz & Gilberto
4) Chico Science & Nação Zumbi: Da Lama Ao Caos
5) Secos & Molhados: Secos & Molhados
6) Os Mutantes, Caetano Veloso, Gilberto Gil, Nara Leao: Tropicalia
7) Tom Jobim & Elis Regina: Tom & Elis
8) Heitor Villa-Lobos : Bachianas Brasileiras
9) Egberto Gismonti : Sol do Meio Dia
10) Sepultura : Roots
/block of unsubstantiated opinions/ I don't think Rolling Stones claims to be a full list of all music of all time, nor do I think their editors would claim to be experts in all music. I dare say they hardly claim to be experts. I'd imagine they'd say they were more interested in being entertaining.
/going off the rails a bit/ Now that I think about it, it would honestly be pretty disgusting if they did try to make a list encompassing all of music. Either it's strictly analytical, at which point you're really asking "What's the best selling of all time", or it's saying "our opinion is a proxy for every other opinion". The hubris of that kind of project would outweigh any good it could do.
Otherwise, selecting the judges would be a herculean task.
Very difficult to find any of the music on YouTube though, because Lao script alphabet is so different, same as for Thai, I don’t even know how to type any of the letters.