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William Forsythe has been called a lot of things in his four decades as a dancemaker: wilful provocateur, ‘pretentious as hell’, even ballet’s Antichrist. But nothing, he claims, to warrant US government officials showing up, unannounced, at his door and threatening him with arrest. Had he been reported by an angry dance purist, perhaps? After all, this is the choreographer who has done more than any other to push the limits of what ballet can be, the great forward-thinker hailed for his athletic, sometimes bewildering, deconstructions of an art form that goes back centuries. It’s gained him an army of devoted (read obsessive) fans, but also some vocal detractors.

‘Ballet is woman’ insisted George Balanchine, but ballet can also be a big man in a dress as any fan of Les Ballets Trockadero de Monte Carlo will testify. The Trocks began life in 1974, dancing for a select few in pop-up performance spaces in Manhattan, but the troupe’s irresistible blend of low comedy and high art soon outgrew its coterie audience. By the mid-1980s it was a fixture on the national and international tour circuit. Japan, with its ancient tradition of cross-dressing onnagata, is practically a second home. Classical ballet has long been a soft target for physical comedy — think of Freddie Starr retrieving a packet of Rothmans from the ‘lunchbox’ at the front of his tights or Morecambe and Wise joining the four little swans.

It was Le Corbusier who famously wrote that ‘A house is a machine for living in’ (‘Une maison est une machine à habiter’). But it was a visit to a masterpiece of his great rival among modernist architects — Ludwig Mies van der Rohe — that brought home to me how literally accurate that celebrated aphorism was. His Villa Tugendhat at Brno is one of the great monuments of early modernism. To run smoothly, however, this luxurious dwelling required almost as much machinery as a small ocean-liner. The building has been restored with rigorous scholarship to look exactly as it did when its first owners, Fritz and Grete Tugendhat, moved in 88 years ago.

Sacha Baron Cohen’s latest series Who Is America? isn’t funny. But then, nor was his terrible 2016 movie The Brothers Grimsby. Nor was his rubbish 2012 film The Dictator. Nor, let’s be honest, were his classic original characters Borat, Brüno or even Ali G. Obviously, they had their moments: the ‘mankini’ — that bizarre, electric green, giant-thong-like swim wear worn by Borat; the classic late-Nineties catchphrase ‘Is it because I is black?’ And sure it must have taken some nerve — even in character — to explain to a clearly impatient and unimpressed Donald Trump his business plan for some anti-drip ice-cream gloves. But how often, even at his best, does Baron Cohen ever make you laugh?

You remember slow TV? Pioneered by the Norwegian Broadcasting Corporation, with its classic Bergensbanen — minutt for minutt (2009), which simply stuck a camera on the front of a train and recorded the seven-hour journey from Bergen to Oslo, slow TV is a nice idea, unless you’re in a hurry, or you have an actual life. The advantage of what you might call Slow YouTube is that it’s pretty damn quick in comparison to the original hardcore Scandi stuff. Slow YouTube — a term I’ve just invented — tends to consist of short documentary-style pans and long shots of everyday things, places and people, a bit like watching your uncle’s old cine-footage of your aunt walking down the street sometime in the 1970s.

Antony Gormley has replicated again. Every year or so a new army of his other selves — cast, or these days 3-D fabricated, in bronze, iron, steel — emerge from his workshop. Some lucky clones find themselves in wild and beautiful places; others are trapped in private collections. The latest clutch, generation 2018, find themselves in the new galleries at Kettle’s Yard, Cambridge (until 27 August), one sticking out horizontally from a wall, another, an airy stack of steel bars, staring down through a window into town. It’s called ‘Subject’, this work (also the title of the exhibition), and Gormley’s intention is that it acts as an invitation to each gallery-goer to pause; to become aware of themselves as subjects too.

Older readers will perhaps recall the once popular Sunday evening TV programme Scrapheap Challenge, in which oily, boilersuited blokes competed to build machines out of materials scavenged from a scrapheap. Even older readers will recall The Great Egg Race, presented by Professor Heinz Wolff, in which bejumpered and bewhiskered engineers competed to build machines from materials scavenged from a BBC studio. These days, engineers and inventors call themselves makers, live and work on YouTube, are covered in tattoos and piercings, and the best of them are women. Laura Kampf posts videos about once a week. She makes bicycle sidecars and the sort of quirky furniture that probably seemed like a good idea at the time and goes down well in Cologne.

I don’t get Johann Sebastian Bach. I mean, I get that he was good — no Mozart, sure, but definitely up there in anyone’s top five 18th-century composers. But that’s not enough. Bach must be revered as the One: the supreme and universal musical genius. When John Eliot Gardiner celebrated the millennium by performing Bach’s complete cantatas, it wasn’t a cycle or a series but a ‘pilgrimage’, if you please. (He's back with more cantatas this weekend at the Barbican.) Playing Bach, we’re told, requires profound selflessness — though if you’ve ever witnessed a solo violinist hijacking an orchestral concert to saw through all 15 tortured minutes of the D minor Chaconne, you might call it something else entirely.

‘Sunil Lanba, Salman Quaraishi, Omar Syed…’ Names play from a crackling gramophone. We hear what they were before the war. Teacher. Engineer. Dancer. And what they endured during it. ‘I put down telephone cables in the mud,’ says one man. ‘Voices in the mud. Half of them already dead, sir.’ Already dead repeats and repeats. A juddering stuck record. Akram Khan’s forgotten soldier — one of 1.5 million Indian men who fought in the trenches in the first world war — is also stuck. In Xenos, Khan’s last performance, though he will continue his career as a choreographer, a shell-shocked Indian sepoy has returned home in body — the Indian scene is set by percussionist B.C.

The Royal Ballet’s 2016 Frankenstein was a masterclass in how not to make narrative dance and the news that Liam Scarlett had been chosen to spring-clean and ‘reimagine’ Swan Lake had many balletomanes reaching for the smelling salts (it doesn’t take much, to be honest). It was sighs of relief and trebles all round when the new production premièred at Covent Garden last week: proper tutus; gorgeous designs; first-rate dancing. The critical response has been largely positive but not everyone had a five-star evening. The Daily Telegraph gave it a niggardly three stars, finding the designs ‘variable’ and bewailing the absence ofa dramaturg (which has to be some sortof first).