Live drums as used by Roland and wersi, allow for a real time played drum sample/track to be delayed os go faster when you change the tempo of a song..

So are there any other brands out there also using this technique? And could it be that there are keyboards that allow for this technique to be used with all their accomp. tracks?

Its that all these keyboards have fancy names for certain stuff and they all mean the same, so please enlighten me on this question....