Jeremy Denk, pianoall photos: Joseph Sinnott for 92nd St Y Jeremy Denk, one of our leading classical pianists, winner of a MacArthur fellowship and the Avery Fisher Prize, originally dismissed the gnarly genius Charles Ives  as “the crazy uncle of American music, weaving familiar tunes—hymns, ragtime, marches—into unsettling quilts.” But over time Denk has evolved ...