backbeats
Backbeats are a feature of many Western popular musics in which the rhythm places a strong accent on beats two and four within a 4/4 measure. The effect is created primarily by the snare drum on the drum kit, often supported by the bass drum and percussion to shape the groove. While notated as a rhythmic emphasis rather than a separate melody, the backbeat helps establish the danceable feel characteristic of the style.
In a typical rock or pop groove, the downbeat is on beat one, with a steady bass
Historically, the backbeat became a defining element of mid-20th-century R&B, rock and roll, and later rock; it