"Want U Back" (Cher Lloyd featuring Astro). The world’s #1 dance game brand is back with Just Dance 4! The latest edition of the record-breaking franchise takes the party to a whole new level of fun with new game modes, coaches and stylish environments. Written by Savan Kotecha and Johan Schuster. Published by EMI April Music Inc. (ASCAP) / MXM Music AB. Admin. by Kobalt Music Pub. America, Inc. All Rights Reserved. Used by Permission. Courtesy of Sony Music Entertainment UK Ltd. Astro appears courtesy of Epic Records. By arrangement with Sony Music Licensing.