It’s only rock ‘n’ roll — but it isn’t, is it? The music business is about commerce as well as entertainment, and the Rolling Stones are one of its biggest multinational firms. There’s plenty of both art and business in “Exhibitionism,” a vast exhibition that covers 1,850 square meters of London’s Saatchi Gallery with five decades of Stones history. The more than 500 artifacts, borrowed from the band’s archive and private collectors, include musical instruments, lyrics, sketches, film clips, outfits, posters, album artwork and stage designs. There is even a fake donkey. From entertaining to excess, the Stones rarely do things on a small scale. Until September 4 at Saatchi gallery. Get more info HERE