Tributes to an Icon: 'He truly deserves to be called a genius'
Chris Hadfield (astronaut) - "Ashes to ashes, dust to stardust. Your brilliance inspired us all. Goodbye Starman."
Brian Eno (musician)
"I received an email from him seven days ago. It was as funny as always, and as surreal, looping through word games and allusions and all the usual stuff we did. It ended with this sentence: 'Thank you for our good times, Brian. They will never rot'. And it was signed 'Dawn'. I realise now he was saying goodbye."
Christy Dignam (Aslan lead singer who supported Bowie in Slane)
"He was part of a golden era of rock and roll and there will never be the likes of him again. Even today, you don't see superstars like David Bowie any more. Bono would be up there but you don't see stars of his quality. The Rolling Stones are still the same today as they were back in the 1960s. Paul McCartney is still the same as he was. Bowie changed all the time. He had all his different personas.
"He was the first (artist) to develop a website. When the internet came out first, he said it was going to change everybody's life and he had great foresight. He brought out a new album on Friday, 'Blackstar'. Even in that he uses new innovations up to today."
"David Bowie was someone who people of my age, and those quite a bit older, felt we grew up with. He provided a soundtrack to our lives.
"He was also a master of reinvention, who kept getting it right, leaving a body of work that people will still be listening to in 100 years time. He was someone who truly deserves to be described as a genius."
"Without a doubt, the biggest male person in the 1970s was David Bowie because everything he did, it wasn't just real Bowie freaky fans and that, it was much bigger than that.
"When hits in the charts meant something, he had loads of hits. And then he kept going with them afterwards. And then he went into the 1980s with 'Ashes to Ashes' and all of that. To be honest, he lost his way in certain 1990s albums but he was still the man."
Kanye West (rapper)
"David Bowie was one of my most important inspirations, so fearless, so creative, he gave us magic for a lifetime. I pray for his friends and family."
"Very sad news to wake up to on this raining morning. David was a great star and I treasure the moments we had together. His music played a very strong part in British musical history and I'm proud to think of the huge influence he has had on people all around the world.
"I send my deepest sympathies to his family and will always remember the great laughs we had through the years. His star will shine in the sky forever."
"I'm devastated. David Bowie changed the course of my life forever. I never felt like I fit in growing up in Michigan. Like an oddball or a freak. I went to see him in concert at Cobo Arena in Detroit. It was the first concert I'd ever been too. I snuck out of the house with my girlfriend wearing a cape.
"We got caught after and I was grounded for the summer. I didn't care.
"I already had many of his records and was so inspired by the way he played with gender confusion."
John Kelly (broadcaster)
"If you want to know what a creative, artistic life is, you look at David Bowie. If you want to know what art does and what it can achieve, listen to his music. He was a pop star, he was a rock star, he was all of those things. He was also much more than that.
"He was an innovator and he was a magpie, it has to be said. He picked stuff up from other places too. Pop star on one hand but also a creative genius who took it beyond that."
Brian May (guitarist in Queen):
"I woke up late, after a long night, to shocking news. David Bowie gone. I don't know if I can react immediately.
"He was a fearsome talent and the loss to music and culture from his passing is inestimable. In and out of our lives, always challenging and innovative, and … shocking.
"This news is hard to take in. I had no idea he was close to death. Would like to have said something. Sincere condolences to his family. But what a life. All hail, David Bowie, Star Man, Hero."