An extended play record, usually referred to as an EP, is a musical recording that contains more tracks than a single but less than an album or LP record. Contemporary EPs generally contain four or five 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 records other than 78 rpm standard play (SP) and LP, but it is now applied to mid-length CDs and downloads as well.