CPDL.org, also known as the Choral Public Domain Library, is a website that offers a vast collection of free choral sheet music for choir directors, singers, and music enthusiasts worldwide. Established in 1998, the site hosts thousands of scores, recordings, and translations of choral music from various time periods and composers. Users can easily search for specific pieces, browse by composer or genre, and contribute their own content to the library. With its user-friendly interface and extensive selection, CPDL.org is a valuable resource for musicians looking to explore and perform choral music.