Hey, I made a Spotify playlist. It has one song per language.
So far there’s Arabic, Bulgarian, Danish, Dutch, English, Finnish, French, German, Greek, Haitian Creole, Hindi, Hungarian, Icelandic, Italian, Latin, Lingala, Low German, Portuguese, Pulaar, Sardinian, Spanish, Swabian (I know. It’s not a language), Swedish, Tamil, Turkish, Tuvan (?), Vonlenska/Hopelandic, Welsh and West Flemish.
Maybe there’s too much of the blatantly obvious (Björk’s first band, Huun-Huur-Tu, Jacques Dutronc, Tarkan, Tenores di Bitti…). But it’s all stuff I like a lot.