The hottest ticket in L.A. now? Classical music from the Los Angeles Philharmonic, thanks largely to its new Walt Disney Concert Hall downtown. Using titanium swoops and curves similar to his Guggenheim Museum in Bilbao, Spain, “star-chitect” Frank Gehry furnished the wood-clad, 2,265-seat auditorium with skylights and a three-story window — for the eyes and ears of lucky concertgoers only. The latest landmark also serves the ticketless with a lobby restaurant, shop, and strolling grounds outdoors. (323) 850-2000,