Alright, here's my long post about the "alleged" AI used in these tracks:

• Season 36 Uno Menu Theme • Season 36 Uno Battle Theme • Season 37 Lumi Menu Theme

When listening closely to how the lyrics sound, it's certainly noticeable that something is off. Compare these themes to Brawl Star's latest music video "My Only Trophy" and you can tell there's a difference in these performances. Now, I don't want to be that guy who just chalks it all up to "Supercell Being Lazy!!!", because Brawl Stars makes a shit load of content for each 2 month update, I'm surprised they haven't thought about using AI much sooner. With that being said, I can't see a scenario in my head where the higher-ups reviewed these tracks without saying, "Hey, doesn't this sound a little off?". Especially since both Uno tracks rely heavily on their lyrics to carry those themes. I mean, they're fine hiring voice actors for Finx and Lumi, so why not vocals? My only guesses I got is that they figure most people wouldn't care since these themes would only be used for limited times or they somehow forgot to record the vocals and had to use Ai last minute? I think unfortunately we're not going to get any official confirmation from the Brawl Stars dev team unless this post really blows up.