If you’re a Tidal subscriber, the next time you get a phone call it just might be from Jay Z.

Tidal executive Vania Schlogel told Business Insider that the rapper has been dialing up subscribers, telling the site: “He called some of his fans and one of them made the funniest comment. He said ‘This is the best customer service call I’ve ever received!'”

In addition to Jay, other musicians associated with Tidal, including Jack White, have also been making calls. The musicians have been gaining access to their fans’ contact information via their own Tidal accounts where they can monitor who has been listening to their music and get the stats on their albums.

Schlogel further noted that Jay is “very deeply involved, and the reason being is because this is a life project for him” and that “he works every day” on the site. [Billboard]