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This is from Duke’s Center for the Study of the Public Domain:

On January 1, 2021, copyrighted works from 1925 will enter the US public domain,1 where they will be free for all to use and build upon. These works include books such as F. Scott Fitzgerald’s The Great Gatsby, Virginia Woolf’s Mrs. Dalloway, Ernest Hemingway’s In Our Time, and Franz Kafka’s The Trial (in the original German), silent films featuring Harold Lloyd and Buster Keaton, and music ranging from the jazz standard Sweet Georgia Brown to songs by Gertrude “Ma” Rainey, W.C. Handy, and Fats Waller.

You can learn more from their “Public Domain Day — Frequently Asked Questions” and from this video:

You might also be interested in The Best Resources To Learn About Copyright Issues.