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

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

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Hi Metroid,
I'm just a *little* late in answering this question but I found out it was still unanswered.

The name of the song that plays in the Pokemon Let's Go Pikachu/ Eevee Trailer is called **Heart of Gold - Neil Young**

And that brings the case to a close! Hope I helped.

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Heart of gold. That's a cool name

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Honestly I'm too lazy to listen to both songs all the way through, but they sound nothing like each other lol
https://www.youtube.com/watch?v=9jRtpMKLsts
https://www.youtube.com/watch?v=X3IA6pIVank

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There is no way that those two songs are even close to the same song, they have completely different words, different beats, and style of music