In the second segment, 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”?”
Interestingly enough, “the Lamb of Columbia” seems to be a call back to the villainess of BioShock 2, Sophia Lamb.
Check out the mockumentary in the video below.