The world of classical music suffered a great loss this past Sunday, 9 December 2012. Charles Rosen — concert pianist, musicologist, teacher, critic, brilliant polymath, and author of several hugely enlightening books in the domain of classical music, one of which, The Classical Style, has become a bona fide classic — died of cancer in Manhattan at age 85. We considered (and consider) Mr. Rosen a latter day Sir Donald Francis Tovey and his absence will be deeply felt both by the classical music world generally and by us personally as we owe him much. For more details on Mr. Rosen's life and work than we can provide, the New York Times obituary can be read here, and the Guardian obituary, here. Atque in perpetuum, Charles, ave atque vale.