While DJ Premier’s So Wassup Video Series continues to organically migrate to all corners of the internet, Tis the season for gifts, and there isn’t a better way to end the year then with two legends collaborating on a new single.  Displaying the chemistry they previously exhibited on PRhyme 2’s “Flirt,” (which DJ Premier, Royce 5’9,” 2 Chainz and The Roots also performed together on The Tonight Show Starring Jimmy Fallon).  DJ Premier and 2 Chainzclose out the year by gifting fans their new single “Mortgage Free.”