Visit iTunes.com on Tuesday, September 20th to DOWNLOAD "SHAKE IT OFF" REMIX FEAT. JAY-Z & YOUNG JEEZY AT ITUNES. Mariah's new remix for "Shake It Off" will be available EXCLUSIVELY at iTunes.com for a limited time (Sept 20th - 24th)! Don't miss your chance to put Mimi on top of the chart again. Get the DOWNLOAD September 20th