Dance Dance Revolution Universe (Xbox 360)

Dance Champion
To unlock the Dance Champion, simply beat her once in a dance tournament.

Music & Backgrounds
To unlock new songs, backgrounds, and even a back up dancer listen up: in the mission mode, capture the entire green area near the middle left, near where you start. Travel to the top of the green area and capture some of the land above it, but don't capture Hawaji right away). 

Go to the top of all the land you captured and now, finally, travel to Hawaji. On the way, you should be offered a few songs, backrounds or even a Back-up dancer. Psyche! Continue this process to get all the stuff through each country. Good luck dancers.

Songs: Quest Mode
Special Invitational Events appear randomly on the map as Envelopes. They are always "Fanbase" type challenges and to unlock songs you must complete Special Events in the following places:

• Cachaca
  Washington

• Drivin
  Florida

• Healing Vision
  Ontario

• Koibito
  Texas

• Love Me Do
  New York

• Stop Violence!
  Missouri

• Think Ya Better D
  California

• Treble, Bass, and Attitude
  Illinois

• Bongo
  Complete the Western Region competition.

• Maximizer
  Complete the Nation Championship #1 competition.

• My Only Shining Star
  Complete the Eastern Region competition.

• Paranoia Evolution
  Complete the Nation Championship #2 competition.

• Return of the Toe Jam
  Complete the Southern Region competition.

• Xenon
  Complete the Canadian Region competition.