Just let me hear some of that rock and roll music / Any old way you choose it / It's got a back beat, you can't lose it, / Any old time you use it / It's gotta be rock and roll music / If you wanna dance with me - Chuck Berry - Rock and Roll Music.
A term used in American popular music to describe a continuous heavy accent on beats 2 and 4 in jazz and rock and roll music Search Google com for Backbeat
The rhythmic emphasis on beats 2 & 4 within a 4 beat bar Many rock drum patterns are based around the kick (bass) drum played on beats 1 & 3 with the snare drum sounding the backbeat on beats 2 & 4