Louisvillian Emily Albrink performs the role of Musetta in the upcoming Kentucky Opera production of Puccini's “La Bohème,”and to warm up, she and other cast members have been performing short pop-up concerts around town. Yesterday over lunch, she surprised travelers in the Galt House atrium bar and pedway with a song.“La Bohème” runs September 20 and 22 at the Brown Theatre. Albrink will be a guest on Byline next Friday, September 20.