Huh; the one you linked is way too Japanese for my taste (it’s the voice, way too high, like nails on a chalkboard), but I checked a couple videos at random from their YouTube channel and got the Dandadan ending and an extended version of Chainsaw Man’s second ending (both with different visuals), which sound great (for anime endings) but aren’t something I’d listen to on their own. Definitely not jazz or anywhere close, though. Thanks anyway.