Ok, probably only applicable to the British here, as I don't know if it's gone across the pond yet

But....

Sonny Jim - Can't Stop Moving

This is topped to be the hit of the summer

But I've heard this song before
ages ago (and I mean like 6 months / a year ago, maybe more)

I had the same thing with that song by the Wamdue Project - King of My Castle

That was floating around many months before it was "famous"

what's going on?

Are sample licensing issues delaying songs being officially "released" or something