Last month, a German library unearthed a previously unknown Mozart composition — a very, very deep cut, if you will. Now, a Manhattan museum curator has found what appears to be a long-lost composition by Frédéric Chopin, the first of its kind to be discovered in over half a century.

Curator Robinson McClellan, who is also a composer, found the piece while sorting through a collection of cultural memorabilia in the vault of the Morgan Library & Museum. It’s written on a scrap about the size of an index card, with Chopin’s name written. After a lot of testing and, presumably, many experts’ corroborations, they confirmed that it’s almost certainly a genuine Chopin composition. Before the Polish composer died in 1849 at age 39, he wrote only about 250 known works — much less than his more prolific contemporaries — so there’s some extra magic in coming across a previously unheard piece by him.

The Morgan is confident that the scrap is authentic. There are doodles on the page and an oddly-drawn bass clef, which correlate to other original Chopin findings, despite the music itself sounding a bit different than his hits. Lang Lang, the famous pianist, recently recorded the waltz for the New York Times; he told the publication that while it’s “not the most complicated music by Chopin, it is one of the most authentic Chopin styles that you can imagine.” It’s pretty, and you can listen to it here.