A recording contract (commonly called a record contract or record deal) is a legal agreement between a record label and a recording act (artist or group), where the act makes an audio recording (or series of recordings) for the label to sell and promote. Artists under contract are normally only allowed to record for that label exclusively; guest appearances on other artists' records will carry a notice "By courtesy of (the name of the label)", and that label in question may receive a percentage of sales through publishing.