Jay Z is launching his streaming music service, called Tidal, on March 30th in the US. This is the service I told you he successfully bought from Swedish investors. Then, on the Friday before the Grammy Awards, Jay summoned a bunch of contemporary stars to a private meeting in Pasadena to discuss Tidal and how they could participate. That group included Madonna and Kanye West, Daft Punk, wife Beyonce, Chris Martin and others.
