Ribatto, robotto, rebato -- Can't remember the word!!!

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Hey mylotters, I'm having trouble with this word - I looked for it everywhere! The identical sound I have heard about that word is ra-bat-oh... I've heard it used when someone was explaining methods with my sales pitch when I was a former sales person before to help me catch the customer's attention besides the pitch I'm using. Then I've seen that word in a book somewhere that involved rap battles and such, one of the commentary was "... hard hitting ribato" the spelling is definitely incorrect since I try to google it but could not find the word! I did not look up the word on that time I seen it on that chapter since it slipped my mind. Would you kindly help me?! Thanks.