Normally I’d wait till Mondays to post my pick for the week, but I feel this is good enough to post a day early. Here we have a band from Chile singing in Mapuzugun, an ancient language of the indigenous Mapuche tribe of southern Chile and south western Argentina. I link to you my favorite track from their 2019 album Kollong. They play progressive groove metal, influenced by death metal - reminding me a ton of Gojira, just a bit unrefined. The Tidal link below goes to when they recorded it under a different name, but with Spanish lyrics instead, the Bandcamp has full Mapuzugun.
An excerpt from their Bandcamp: “Mawiza offers this chant to the protectors of the mountains. “Femngechi witxapürayay iñ kewün” “In this way, our language will rise again.””