@Grycho There is a certain overlap, but they're definitely different. Tribal ambient may or may not be as "ritualistic" or dark in its sound as ritual ambient. Some ritual ambient doesn't use tribal elements as much as others, such as Halo Manash, while acts such as Zero Kama and Lashtal used distinctively tribal sounds. Also, acts such as Phurpa can easily be classified as ritual ambient, but there isn't anything tribal about it. The line between the two is blurry, but it does exist.
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