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Hi, I know this isn't a whole lot to work with, but I've had this song stuck in my head for like 2 days.
But, just the music and melody and only a line or 2...
So I can't really find it online.

It was at a casino, it played like twice in the night, so I assume it's a top-100 type song.

Female vocals, has a kind of Katy Perry/R&B type feel. Very poppy.

So the line I know is, "You don't know, no, you don't know..."

Like: You don't know..., no-ooooh, you don't know...

LOL, I know that's vague, but I've been looking online and can't get to the bottom of it.
I know it's not
Alicia Keys - You Don't Know My Name
Kelly Clarkson Mr. Know It All

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