Sentence:  On the mega-rave circuit, a pop hardcore sound gradually emerged, fusing the piano <WSD>vamps</WSD> and shrieking divas of 1989-era Italo house with Belgian hardcore's monster-riffs and Shut Up and Dance style breakbeats and rumblin' bass. 
Meaning of the word marked with <WSD> tags:  A repeated and often improvised accompaniment, usually consisting of one or two measures, often a single chord or simple chord progression, repeated as necessary, for example, to accommodate dialogue or to anticipate the entrance of a soloist. (from c. 1789)