Whitney Houston mourned by the music world: Rihanna, Mariah Carey and more react

Whitney Houston's death Saturday (Feb. 11) sent shock waves through the music world.

Houston, 48, was found dead Saturday afternoon at the Beverly Hilton Hotel, according to news reports. She was scheduled to take part in a tribute to record mogul Clive Davis, who helped launch her career, Saturday night before the Grammy Awards.

Below is a sampling of reactions from her fellow artists and others in the music business.

Mariah Carey: Heartbroken and in tears over the shocking death of my friend, the incomparable Ms. Whitney Houston.

Wyclef Jean: This is the saddest thing I've ever had to write in my life, R I P to one of the greatest humans that I have ever known Whitney Houston.

Rihanna: No words! Just tears #DearWhitney

Simon Cowell: I am so sad to hear about Whitney. We have lost one of the greatest singers of all time.

Justin Bieber: Just heard the news. So crazy. One of the GREATEST VOICES EVER just passed. RIP Whitney Houston. My prayers go out to her friends and family.

Nicki Minaj: Jesus Christ, not Whitney Houston. Greatest of all time.

Christina Aguilera: We have lost another legend. Love and prayers to Whitney's family. She will be missed.

Paula Abdul: I am devastated. I am absolutely devastated at the news about Whitney Houston. Such a tragic, tragic loss.

Amber Riley of "Glee": I can't even breathe right now. Not Whitney. I'm in tears right now. ;(

Ryan Seacrest: At Grammys rehearsal hearing Whitney Houston has passed away at 48. Everyone here is absolutely stunned.

Wiz Khalifa: #RIPWhitneyHouston #IWillAlwaysLoveYou will remain a classic

L.A. Reid: I am completely devastated by the loss of the greatest voice of all time! R.I.P. Whitney Houston. I will always love you!