Squarepusher, AKA Tom Jenkinson (b. 1975) is a groundbreaking electronic musician. Growing up in Essex, he first came to prominence in the mid-Nineties alongside Aphex Twin, with whom he worked extensively, amid a milieu of post-rave experimentalists exploring the wilder fringes of club-based sounds. Signing to Warp Records in 1995 he has maintained a position at the forefront of electronica, releasing 16 albums, the latest being Damogen Furies.

Dennis Marks, who has passed away at the young age of 66, was in every way larger than life. A talented and prolific music and arts documentary filmmaker, an inspired head of music for BBC Television, and artistic director of the ENO, he latterly reinvented himself as a consummately erudite and warm-voiced broadcaster who took his listeners on fascinating journeys down the Danube and along the Appian Way.

On a snowy day in early spring in New York, the On Kawara – Silence show at the Guggenheim is unlikely to warm you up. His date paintings, postcards, telegrams and other coldly ur-conceptual accountings spiral up those famous white Frank Lloyd Wright stairs, seemingly ad infinitum. But it’s a powerful, hypnotic experience, one that seeps into your subconscious and becomes a meditation on time and space.

Andrew Comben, CEO of the Brighton Festival, chooses ten locations that have resonance with the annual event. He talks about their past and future but, most particularly, what will be happening this May

“Brighton Festival is all about the spaces and people of the city,” he explains, “Some of these spaces are especially evocative. They make artists think about doing things in different ways and make audiences respond accordingly. We have to strategise, sometimes taking over places that are used for other things most of the time. It’s always an adventure.”

This is work that wears its heart on its sleeve. That’s what gets you in the end in this big retrospective of the work of Niki de Saint Phalle.

Ronald Stevenson, who died on Saturday at the age of 87, was a composer and pianist who will be much missed both in the small Borders village where he lived and by the much larger musical community in Scotland and beyond. As a composer he was unashamedly rooted in the late 19^th Century tradition of intellectual pianism – in his music you can trace a line of descent from Bach to Liszt through his great hero Busoni.

One night in Cape Town, I was caught in a power cut. Like an untenanted theatre, the city went utterly dark, darker than perhaps it had been since settlers first arrived three centuries earlier. Street lamps, restaurants, car showrooms, offices were all plunged into Stygian gloom. Without traffic lights to impose order, we drove tentatively over the shoulder of Table Mountain and suddenly, sprawled out on the Cape Flats and shining as brightly as the stars overhead, were Guguletu and Khayelitsha. The lights were on in the townships.

Nominated for Best Foreign Language film at this year’s Oscars, Wild Tales is that rarity, a portmanteau film; even rarer, it’s a good one. Though unconnected by plot or character, the six darkly comic stories are bonded by themes of revenge and fighting back – against cheating lovers, bad drivers, rank bureaucracy, the crook who ruined your life. It’s about people who cross a line most of us only fantasise about.

Cheikh Lô , the much loved Senegalese singer, is back with new recordings for the first time in five years with a three track EP trailing a new album in June, and theartsdesk has an early look at his new video for the lead track “Degg Gui” (see below).

I’ve just spent five weeks in the company of a very austere and sometimes frightening masterpiece, Sibelius’s Fourth Symphony, hearing a great many recordings of it for Building a Library, the abiding gem of Radio 3’s CD Review in which the critic takes the listener through the piece and chooses a front runner.