The waltz has minor errors in rhythm and notation but Mr McClellan said he is sure that Chopin is behind it. "What we're most certain about is it is written in the hand of Chopin, paper that he ...

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 ...