“Remember when art appreciation used to be a simple, straightforward affair? You walked into a gallery, looked at some pictures, or maybe a few sculptures, and that was that. Then came photography, followed by film, the emergence of performance art and all that conceptual stuff with unmade beds, pickled sharks and rooms full of oil. Now, thanks to 21st-century technology, sound art – art for the ears, as well as the eyes – is bringing a new dimension to the art world.”