A beat is the basic time unit of music, the pulse of the mensural level, also known as the beat level. However, since the term is in popular use, it often connotes the tempo of a piece or a particular sequence of individual beats, the meter, rhythm or groove. In hip hop music it may refer to the entire instrumental, non-vocal layer of the song, which is frequently based on a looped recording of a drum-rhythm. It may also refer to particular beats in the measure. Much music is characterized by a sequence of stressed and unstressed beats (often called "strong" and "weak") organized into measures and perhaps indicated by a time signature and tempo indication.
The heartbeat that sets the pace of the song. Beats are found all around us in our daily lives. Following the same beat helps bandmates play together.