Bioshock Infinite | Columbia A Modern Day Icarus Part 2

Alistar Bloom further explores the mysteries surrounding the floating city of Columbia in this "Truth from Legend" segment. What is the "Songbird" -- and how is it connected to the enigmatic "Lamb of Columbia"? (http://www.gamezone.com/news/2013/02/15/bioshock-infinite-video-looks-into-the-truth-and-legend-of-songbird)