DEFINITION. . .

• A music video is a short film or video that accompanies a complete piece of music, most commonly a song. Modern music videos are primarily made and used as a marketing device intended to promote the sale of music recordings. Although the origins of music videos go back much further, they came into their own in the 1980s, when MTV's format was based around them. The term "music video" first came into popular usage in the early 1980s. Prior to then, such clips were described by various terms including "promotional films" or "promotional clips".
  
• Music videos are often called promo videos (or simply promos), as they are usually used as promotional devices by record labels. In the 1980s, the term "rock video" was often used to describe this form of entertainment, although the term has fallen into disuse. Music videos use a range of styles of filmmaking, including animation, live action filming, documentaries, and non-narrative approaches such as abstract film. Some music videos blend different styles, such as animation and live action.
  
• Lyrics (in singular form Lyric) are a set of words that accompany music, either by speaking or singing. The word 'Lyric' derives from the Greek word for a song sung by the lyre, "lyrikos". The word lyric came to be used for the "words of a song"; this meaning was recorded in 1829. The common plural (perhaps because of the association between the plurals 'lyrics' and 'words'), predominates contemporary usage. Use of the singular form 'lyric' remains grammatically acceptable, yet is considered erroneous in referring to a singular song word as a 'lyric'.[verification needed] The sung words of a song are called "lyrics".Many music recordings come with a lyrics booklet.