The Library of Congress has one of the largest record collections in the world, and now anyone can enjoy it online for free.
So far, the library's elves have digitized around 10,000 of the six million items in the collection, but they plan to add more on a regular basis. The first batch comprises recordings from between 1901 and 1925, and includes everything from opera and blues vocals, to whistling, comedy acts and speeches. Sony has been a major early supplier, providing access to all of the early 20th century recordings they own the rights to.
The recordings can be browsed in a bunch of different ways, and you can create your own playlists or simply play one selected by the LoC staff.
Did I mention that it's all free?