How does a savvy pop artist top themselves after they've performed with the sublime Robyn/Kelis/Far East Movement tour? By playing the biggest rock festival of the summer, that's how. Dan Black, fresh off his role as an opener on the All Hearts tour, played a Lollapalooza set bristling with quirky beats, including his hits "Symphonies" and "Alone". See his stylish set in our pics. (Photos via Tara Ashlee)