<Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (December 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (December 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> An extended play record, often referred to as an EP, is a musical recording that contains more tracks than a single, but is usually unqualified as an album or LP . EPs generally contain a minimum of four tracks and maximum of six tracks, and are considered "less expensive and time - consuming" for an artist to produce than an album . An EP originally referred to specific types of vinyl records other than 78 rpm standard play (SP) and LP, but it is now applied to mid-length CDs and downloads as well . </P> <P> Ricardo Baca of The Denver Post said, "EPs--originally extended - play' single' releases that are shorter than traditional albums--have long been popular with punk and indie bands ." In the United Kingdom, the Official Chart Company defines a boundary between EP and album classification at 25 minutes of maximum length or four tracks (not counting alternative versions of featured songs, if present). </P>

What is a ep in the music industry