Modern Music, the collaborative recording between longtime colleagues and jazz pianists Brad Mehldau and Kevin Hays, and composer and arranger Patrick Zimmerli (a mutual friend of both) is startling for its deep reliance on modern classical technique and arrangements. Certainly, Mehldau is known for dabbling in all sorts of music, from pop to classical on his recordings and in live performance. Hays, too, has branched out in recent years, from his signature, intelligent, hard swinging post-bop approach to include compositions with modern classical touches, such as those found on Piano Works, Vol. III. Zimmerli, who wrote the charts for this session, played saxophone in his younger years.