Was there actually a time when Def Jam didn't exist? It's hard to imagine, but it's totally true. In fact, you can celebrate three decades of Def Jam Recordings at their anniversary bash, set to take place on October 16th at Barclays Center in Brooklyn. Look for appearances ranging from Rick Ross to 2 Chainz to EPMD to Ja Rule to Jeremih!Want to go? Enter below! We have one pair available for giveaway.