Given their proportions and lack of upright agility on their hind paws, the very notion of giant pandas dancing a waltz sounds, dare I say, absurd. So going by its title alone, any chance of a cheeky lilt in 3/4 time or a nostalgic nod to the Strauss clan in Yao Chen’s panda-themed Waltz of the Rolling Giants, the opening piece in the Hong Kong Philharmonic’s “Chengdu Pre-Tour Concert: Eric Lu Plays Chopin”, seemed slim. Thankfully, though, Chen’s waltz – an HK Phil world premiere written...