The Breakdancing Event is a 7 day limited time event which is unlocked after you complete the Salsa Dancing Event.
If you can complete this Hobby within the time limit you earn the unbelievably cool DJ booth!
To get started, pick up the Breakdancing Boom Box from the Promotions R Us Store.
Unlike the Salsa Dancing Event you can only have one Sim breaking at a time! We are limited to one Boom Box per town and one person can participate at a time.
The good thing is though there are two convenient time options:
A Quick Break 1hr 30 mins (495 XP)
And a Long Break 10 hrs 30 mins (1248)
Obviously if you want to motor through this challenge you'll need to have your game by your side much of the day and keep repeating the short break task. Overnight you can run the Long Break task.