I had several motives in attending this concert. Finnish conductor Susanna Mälkki is a fast rising star in the classical world, recently appointed Music Director of the Helsinki Philharmonic. I was eager to hear the rarely performed Griffes tone poem, a brilliant programming move. (We need to experience more "A" pieces from obscure composers of the past, I frequently argue.) And I was curious to see how Jeremy Denk would interact with Mälkki, since both musicians are of the brisk, sparky sort. The concert did not disappoint.