Free things to do in London this week

Cerith Wyn Evans’s work looks impressive. His big, sprawling, humming white neons are real eye-pleasers. Their splintered, chaotic composition sits somewhere between hectic randomness and studied composition. You search them for patterns as they thrum and vibrate and fill the room. And they’re not just pretty shapes. Written into their lines and curves are early twentieth-century designs for helicopters by Paul Cornu and the shadows cast by Marcel Duchamp’s famous bicycle-wheel sculpture at MoMA. Movement and the play of light, all frozen in a discombobulating moment. A neon curtain made of Japanese kanji is a translation of a Proust description of a fountain (another Duchamp nod); a series of glass panels scream with screeching improvised sounds opposite crystal flutes hanging from the ceiling that emit clashing but gentle notes. There’s inspiration taken from experimental classical music and Japanese Noh theatre here, but it’s Marcel Duchamp who looms largest. He’s the inspiration for the room of shattered folding screens and windshields as well as those neons. Don’t get me wrong, all of these works are nice, but Evans is dealing with the same concerns that artists were dealing with back in the 1950s and ’60s. It feels a little old hat. Movement, light, Duchamp, improvisation – this could’ve been made half a century ago. If you’re being generous, you’d say that these are eye-tingling works that play with shape and form. But if you’re being a bit harsher, you might say tha

‘Why do you want to paint my portrait?’ Ed Sheeran asked David Hockney. The artist looked up from his easel, lifted the cigarette from his lips and uttered gently ‘it’s because I’m in love with the shape of you’. An awkward silence filled the air. ‘Although my heart is falling too,’ he continued, ‘I’m in love with your body’. That’s probably what happened. We’re just guessing here. But either way, you’ll be able to see the result of the ginger megastar’s encounter with the great British artist at Annely Juda Fine Art at the end of February, which is nice. There’ll be other portraits on show too, but who cares. Ed Sheeran by Hockney. What a time to be alive.