Luciana Souza headlines the South Pasadena Public Library Carnegie Concert on Saturday. Photo: Anna Webber By Sven Fieldsteen and Aleja M. Sierra The  Library Carnegie Stage Concert, an essential and always compelling component of South Pasadena’s annual Eclectic Music Festival & Arts Crawl, will be held this Saturday, April 27th and headlined by jazz singer extraordinaire Luciana Souza. One of the foremost jazz vocalists in the world, Souza will be accompanied for this unique presentation by Otmaro Ruiz, a renowned Venezuelan pianist. The duo are slated to take the stage at 6:30 pm inside the beautifully restored South Pasadena Public Library Community Room—an acknowledged historical, architectural and cultural landmark—at 1115 El Centro Street. Julia Vari returns to L.A. for the Eclectic Music Festival. Photo: Charlotte Bell Photography Back by popular demand, acclaimed jazz and world music composer-pianist-vocalist Julia Vari kicks off the concert at 4pm. Vari is...