Any Song or Musical Work Published in 1922 or Earlier is in the Public Domain in the USA.
No Sound Recordings are PD in the USA due to a tangled complexity of Federal and State Law.
All Public Domain Information on this Site is Based Entirely on USA Copyright Laws.
Public Domain Status Must Be Verified Separately for EACH Country where Music is Used. Music Enters the Public Domain 70 Years after the Death of the Author in Most Countries Other than USA.