Apple (NASDAQ: AAPL) could soon buy Tidal, a music streaming service owned by Jay Z, according to The Wall Street Journal. Jay Z purchased the service from Swedish company Aspiro for $56 million last March. To attract musicians to the platform, he gave 19 artists small stakes in the company, and backed each artist with millions of dollars in marketing. The service now hosts exclusive songs from Kanye West, Rihanna, Prince, and Jay Z’s wife, Beyonce, along with a catalog of 40 million songs.