Back in January, Jay Z purchased the music streaming service TIDAL. The company is now preparing the relaunch underneath it's new leadership. Today at 5 p.m. EST, TIDAL will hold a press conference where Shawn Carter will reveal upcoming plans of the future for the company. Artists supporting Hov's new venture include Kanye West, Beyonce, Nicki Minaj. Daft Punk, Usher, Madonna, Calvin Harris, deadmau5 and much more. Watch the official promo ad below and stay tuned for updates on the official launch.