Justin Bieber《Stay》

The song sounds so comfortable that I can’t judge the key.
So it was found through scaler that it was Dbmaj

But the song starts with Gbmaj
There is a Faug in it. I confirmed it through studio one, but it sounds strange
I don’t know if it’s right. Do any friends have time to confirm it for me.
It seems that the chord arrangement should be strange, so the music sounds good, ha ha

I especially hope that someone can find out some popular song chords with scaler.
The video time should not be too long. It’s best to be explained by a beautiful girl.
Ha ha ha ha
In addition, the chord function of studio one is also good