What is going on at New York City Ballet, home of the abstract, neo-classical, pared-down, no-scenery, no-story, nothing-extraneous aesthetic that George Balanchine made into an artistic religion? So far, three out of the four pieces commissioned for the company’s ambitious “Architecture of Dance” festival have been - more or less - story ballets (only Wayne McGregor has resisted the lure). Alexei Ratmansky’s Namouna offered a dizzying whirl through a faux-19th-century ballet, complete with mystifying characters, impossible plot and glorious choreography.

There are, in urban myth, those moments when a runway model – leggy, impassively superhuman and dressed in some impossibly haute garment – catches a heel and collapses, foal-like, into a heap of fragile legs. It’s a moment that Sex and the City the series neatly turned on its head, urging us to celebrate the beauty to be found in human flaw and error; yet, watching the self-assured sass of this once-mighty franchise sprawl headlong, it wasn’t beauty but a sense of raging frustration that dominated. The fashion, the friends, even the puns are all still in their place, but where (as Carrie herself might ask), where is the love?

In the New York City Ballet’s grand tradition of ambitious festivals of new work, its current offering, Architecture of Dance, is a big, ambitious deal: seven new ballets; four of them to commissioned scores; five sporting sets by the famed architect Santiago Calatrava. Three of the works are by the men who are arguably the most exciting ballet-makers in the world right now: Alexei Ratmansky, Wayne McGregor and Christopher Wheeldon.

Broadway tends to go into overdrive in May, that time of the theatrical year when New York stages are at their buzziest in the run-up to the Tony Awards (to be awarded on 13 June).

Laurie Anderson's new show Delusion opens at the Barbican in London next week. Since the late 1960s she has been at the forefront of artistic innovation. From early pieces where she appeared in art galleries (wearing ice-skates in a block of ice that slowly melted), to her epic opera United States I-IV, she has carved out a niche as something between a poet, artist, technician, humourist, pop star and magician. We chatted over a coffee for breakfast in Paris last week, after I had seen Delusion the previous night.

How does a ballerina feel during Swan Lake? Find out instantaneously from the New York ballerina who tweets while she dances. Ashley Bouder is one of the most exciting dancers of the new generation over there - and new-generation she is.

Jonathan Mills has announced the programme for Edinburgh International Festival 2010, on a theme of modern culture in the New Worlds of the Americas and Australasia. Ranging from California to Canberra, New York to New Zealand, from Santiago to Samoa, the festival opens on Friday 13 August with John Adams' oratorio El Niño and closes on Sunday 5 September with the traditional fireworks concert.