In autumn 2024, the Morgan Library in New York announced a sensation: in a legacy, curator Robinson McClellan had discovered a postcard-sized manuscript of a waltz in a minor with the inscription “Chopin”. Chopin experts all over the world have meanwhile scrutinized and confirmed the authenticity of the manuscript: undoubtedly an autograph by the Polish composer, it is moreover the short waltz of a hitherto unknown original work. Scholars and pianists have since then fallen into a waltz fever! In close collaboration with the Morgan Library, G. Henle Publishers has the privilege to present the first Urtext edition of the new Chopin waltz: in addition to the musical text edited by Jeffrey Kallberg, it also offers a facsimile of the autograph. In his epilogue, the internationally renowned Chopin researcher provides fascinating observations concerning the genesis and intention of the small composition. We were able to engage star pianist Lang Lang, who introduced this sensational discovery to the world with his premiere recording, to supply the fingerings. A gem for all Chopin fans and piano aficionados!