The public art installation “Play Me, I’m Yours” — which featured 30 whimsically decorated pianos deposited in various high-traffic locales around Los Angeles — was celebrated Thursday night with a pop-up show at the Egyptian Theatre in Hollywood. “Pianos Live” boasted a lineup of about a dozen artists performing songs in the courtyard space. Many of the tunes paid tribute to the region (Kristy Hanson did Joni Michell’s “California,” Mariah McManus played “California Rain” by the Rescues” and Anthony Starbile took on Phantom Planet’s “California”), while others such as One Two (“All Apologies”) covered songs that inspired them. Pop songstress Karmin capped the evening with Chris Brown’s “Look at Me Now,” an apt choice for the all-dressed-up piano, to be sure. Photographer Carl Pocket shares this gallery.