Jay Z's Tidal: Rihanna, Kanye West, Usher Among Artists Tweeting Support for Streaming Service

Jay Z announces LA Made in America Festival 2014
Frederick M. Brown/Getty Images

Jay Z at a press event at City Hall Downtown Los Angeles for the Budweiser Made in America Music Festival on Labor Day Weekend at Los Angeles City Hall on April 16, 2014 in Los Angeles, California.

With the imminent launch of Jay Z's Tidal streaming service, expected to be announced Monday afternoon (March 30) at an event in New York City, artists are tweeting their support and turning Twitter turquoise blue.

"NAVY, turn the tide," wrote Rihanna at midnight. Usher's message? "It's time to turn the tide and make music history. Show you are part of the movement by turning your profile pic blue."

Kanye West also joined in, hashtagging #TIDALforALL, as did Beyonce, turning her profile bright blue, Calvin Harris and Deadmau5.

As previously reported by Billboard, rapper-mogul Jay Z, whose S. Carter Enterprises announced its purchase of Tidal on March 10, is expected to be in attendance at a splashy launch event that will also be live-streamed.

Despite supporting Tidal, Rihanna denied her eagerly-anticipated new album is dropping on Tidal today (March 30).