The last band I've heard whose music just makes me feel happy is the audience vote winner of the 2019 Eurovision Song Contest. Call me basic, I guess.
Keiino is a trio from Norway, combining modern pop music with joik, a traditional song form of the indigenous Sami people. After the 2019 ESC they put out an album with collaborations with indigenous artists from around the world, including Maori, Aboriginal Australian, and Inuit.
They didn't win Norway's competition to compete in the 2021 Eurovision, but the song they put forward is a banger.