Vince Pearson

Historians and critics have pored over the recordings of these jazz greats like Miles Davis, John Coltrane and Stan Getz so exhaustively, it might feel like they've left no stone unturned. And yet, fans are seeing a slew of exciting new discoveries lately from these and other artists — so-called "lost" albums by some of the biggest names in jazz.

Sixty years ago, this month, Miles Davis finished recording Kind of Blue, perhaps his greatest masterpiece and still jazz's bestselling album. But it was not the only milestone recorded that year.

From 1991 to 1994, Nirvana was one of the biggest bands in the world with a look and sound that would come to define the decade's music. At the height of this fame, though, bandleader Kurt Cobain sometimes seemed to be an unwilling participant who had just been swept up and carried away by Nirvana's success. Then, after less than four years of meteoric fame, Cobain died of suicide on April 5, 1994. He was 27.

As it has annually for 17 years, the Library of Congress picked out a wide-ranging set of recordings — songs, albums, speeches, monologues, field recordings and some very old phonograph cylinders — to add to the National Recording Registry, bringing the total number of works within it to 525.