At both of them, you should click on "categories"
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and .... categories will show up
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In kapaki it will look like this:
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Thay both have a lot of Greek older music, even some rarest stuff, especially at kapaki, like Kostas Tournas' discography, Poll - Antrope (1972), 60s SHAKE and certainly tons of rembetika and old "laika".
Enjoy!