As of January 1, 2020, works from 1924, including George Gershwin's 'Rhapsody in Blue', have entered the public domain in the US. This means that anyone can now access, remix, and republish these works without needing permission or paying royalties. Other notable works entering the public domain include films by Buster Keaton, books by Thomas Mann and Agatha Christie, and music by Jelly Roll Morton. These works will be available on platforms like the Internet Archive, Hathi Trust, and Google Books.