Stock music refers to pre-recorded music that is available for licensing and use in various media projects, such as films, videos, and advertisements. It is typically sold through online libraries, allowing creators to find and purchase tracks that fit their specific needs without the hassle of commissioning original compositions. This type of music is often categorized by genre, mood, or instrumentation, making it easy for users to search for the right sound. Stock music is a cost-effective solution for content creators, as it provides high-quality audio options without the complexities of negotiating rights with individual artists or composers.