Jay Z's TIDAL to promote emerging artists Watch Rihanna's powerful new video Rihanna to release new song on iTunes Rihanna denies cocaine speculation Fast & Furious 7 wins UK box office again Celeb spotting at Coachella: Who's there? Listen to Kanye West demo Midas Touch Lulu: 'Rihanna has changed the landscape' Rihanna writer addresses plagiarism claims Interviewers dish dirt: 8 worst star guests Rihanna debuts new track at March Madness 6 massive pop remixes for Bank Holiday Wilson Phillips sang back-up on Kanye hit Rihanna surprises Jimmy Kimmel in bed Ed Sheeran and Rudimental on track for No. 1 Who is the most powerful person in pop? Who has the biggest single of 2015 so far? Listen to Ella Eyre's new single Playlist: 10 tracks you need to hear Madonna defends Jay Z's TIDAL relaunch Beyoncé, Kanye, Madonna, Jay Z launch TIDAL Beyoncé, Madonna, Kanye in TIDAL video Rihanna wants Sam Smith duet to happen Jay-Z prepares to launch TIDAL service Jess Glynne claims first UK No.1 solo single Home debuts top of US box office This week's new singles reviewed Rihanna scales iTunes with new single Watch Luke Friend cover a Rihanna song Rihanna teases new single on Dubsmash Home, Insurgent battle at UK box office LunchMoney Lewis earns first Aussie No.1 Sam Smith, John Legend keep No.1 single Kendrick Lamar set to score first UK No.1 Glastonbury: Who'll be final headliner? Rihanna wants 'soulful', 'timeless' album Timberlake for iHeartRadio Awards honour Home review ★★☆☆☆ Jim Parsons talks new DreamWorks film Sam Smith number 1 with 'Lay Me Down'