Owned by a duo of experienced piano duelers, Louie Louie's Piano Bar invites crowds to sing along as two pianists belt out song requests and tickle the ivories during interactive improvised performances. Though the duelists’ weapons include traditional crowd pleasers such as "Sweet Caroline" and "Brown Eyed Girl," they encourage audience members to petition for personal favorites from all eras, from Frank Sinatra to ZZ Top. Players pull birthday girls and bachelors onstage for rowdy celebratory serenades, and groups of friends can fashion large pizzas into edible pie charts depicting each pianist’s win percentage.