What song is used in the Let's Go, Pikachu!/Let's Go, Eevee! trailer?

Question

Is it an original song? I've been wondering what that song was. Please find out what song it is. Thanks in advanced.

Comments

aparently it is called "Trailer Theme - Pokemon: Let's Go, Pikachu! and Pokemon: Let's Go, Eevee!" so the song is completely origional
Source - Youtube https://www.youtube.com/watch?v=tJAejlWq7So

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Source?

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That doesn't prove anything. Someone just uploaded the audio from the trailer. There is no official sound track out yet so them saying it's part of the OST is wrong.

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I agree with Pokemaster.

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https://bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon:_Let%27s_Go,_Pikachu!_%26_Pok%C3%A9mon:_Let%27s_Go,_Eevee!_Super_Music_Collection
There's now an OST out, and I believe that the YouTube video linked below is just an upload of it. Didn't go through all of it, but there was a helpful comment at the bottom that provided timestamps for each of the songs, and none of them seem to fit the one used in the trailer.
https://www.youtube.com/watch?v=9_aEenZ00fM