NEW YORK (AP) — The brooding waltz was carefully composed on a sheet of music roughly the size of an index card. The brief, moody number also bore an intriguing name, written at the top in cursive: “Chopin.”A previously unknown work of music penned by the European master Frederic Chopin appears to have been found at the Morgan Library & Museum in Manhattan. The untitled and unsigned piece is on display this month at the opulently appointed institution, which had once been the private library of financier J. P. Morgan.Robinson McClellan, the museum curator who uncovered the manuscript, said it's the first new work associated with the Romantic era composer to be discovered in nearly a century.But McClellan concedes that it may never be known whether it is an original Chopin work or merely one written in his hand. The piece, set in the key of A minor, stands out for its “very stormy, brooding opening section” before transitioning to a melancholy melody more characteristic of Chopin, McClellan explained. “This is…

A previously unknown musical work written by composer Frederic Chopin appears to have been found in a library in New York City.