A playback singer is a singer whose vocals are pre-recorded for use in films. The singer records the song on a soundtrack and the actors or actresses lip sync the song for the cameras. This is a format that is most highly developed in the Indian sub-continent. Although lip sync is also used in films produced in Hollywood and other film centres, making these recordings has not typically been an avenue to fame for singers elsewhere in the way that it has been in India. A singer is a musician who uses their voice to produce music. ... Film is a term that encompasses individual motion pictures, the field of film as an art form, and the motion picture industry. ... // In film formats, the sound track is the physical area of the film which records the synchronized sound. ... Lip synchronization is the synchronization of audio signals (sometimes with corresponding video signals) so that there is no noticeable lack of simultaneity between them. ... ...