Canned heats refer to pre-recorded, popular tracks that are frequently used in movies or advertising. There are various synonyms for the term canned heats, including library music, production music, stock music, music bed, and royalty-free music. These terms are mostly used in the film and media industry. Royalty-free music implies that the user does not have to pay royalties to the owner of the music. Library music and stock music, on the other hand, are licensed by production music libraries, and can be used for commercial purposes. The usage of canned heats is popular among filmmakers and advertisers, who look for high-quality music clips that fit their particular needs.