The Wallis Annenberg Center for the Performing Arts, Los Angeles, will host the Harlem Quartet show, "Game-Changers".Harlem Quartet is a string quartet that was formed in 2006. A string quartet is a musical ensemble of four members wherein two members play violin, one is a viola player and the fourth one is a cellist.Harlem Quartet comprises first violinist Ilmar Gavilán, second violinist Melissa White, violist Ja…