Vijay Iyer and Rudresh Mahanthappa, Vortex

Jazz duo triumphantly mix cerebral and lyrical

I was promised a night of free jazz. This was more a threat than a promise, having spent some of the worst nights of my life listening to the stuff - the strange thing about this most liberating sounding form is how everyone sounds more or less the same. Anyway, this wasn’t a night of wibbly-wobbly squeaky-gate music, but a fully realised, if sometimes chilly, vision. It was spontaneous architecture and interesting structures and lyricism. It was original without being self-conscious about it.

Ed Ruscha: Fifty Years of Painting, Hayward Gallery

First British retrospective for a modern master

West Coast pop art always was a poor relation to the world-beating New York original. Beside the Big Apple titans – Andy Warhol, Roy Lichtenstein and Claes Oldenburg – LA painters such as Ed Ruscha, Robert Irwin and John Altoon remained essentially local figures. Or that’s certainly the way it has looked from this side of the pond.

Pop Life: Art in a Material World, Tate Modern

Money. Porn. Pop. Art. Tate.

That artists didn't just respond to the rapacious commercialism of the late 20th century, but actively contributed to it is hardly news. That the marketing of art can be part of the art itself  is something everyone now implicitly understands, even if it’s only through hearing Tracey Emin wittering about herself on television.