Thanks to the Library of Congress for its National Recording Registry, which is compiling some of the greatest sounds ever recorded. Here is the page for the latest recordings, including Janis Joplin, Ornette Coleman, Junior Wells, Wild Tchoupitoulas and lots of other great stuff.
Be sure to click on link near the top to listen to the audio montage.
Only complaint: it’s going to take a long time to listen to them all.
Prof Chris Daly's Blog 