There are a few threads out there looking for the song, so I thought I’d finally answer the question. It’s called Heights (Remastered) by Jena Livia. This is definitely it, interestingly enough it also uses a lot of samples from various Nintendo games, she had a much cleaner upload of this song but a few days after the trailer released it seems to have been replaced with a version where there are a few weird sounds in placement of some of the Pokémon related stuff. Don’t know what that’s about but yeah here it is, it’s a bit experimental and messy in some places but It sounds great with headphones on.
Also please show her some love, I’ve been listening to her for years and she is such an underrated artist, she mostly does remasters of popular songs but she dishes out a few originals here and there
https://soundcloud.com/jenalivia/heights-remastered?utm_source=mobi&utm_campaign=social_sharing
Nintendo