Lip Syncing - It's importance and what it is.

Lip sync is a technical term for matching lip movements with prerecorded sung or spoken vocals that the listeners hear, either through the sound system in a live performance or television or cinema speakers in other cases. The term can refer to any of a number of different techniques and processes, in the context of live performances and recordings. Lip syncing is important as it allows artists to mime their lyrics in order to dance and interact with the audience at live performances and shows. Therefore to make it look realistic, as if the artist is actually singing, they lip sync in order to make the audience believe they are singing.