What is the secret behind Dido's global success?(The big question)

Dido's Life For Rent album has just passed 5m global sales. How has she managed to succeed where so many UK artists have failed?

Robin Millar, record producer

"She has ability and is world class. She also has a willingness to be nice and co-operative and that doesn't always go hand-in-hand with a lot of musicians, but is important for selling abroad. Her ideas have a single purpose. A lot of artists tend to complicate records, but, if you look at the Top 10 US albums, there are never more than three ideas on them--you know what you are buying, Dido is not afraid to make the best record she can. A lot of artists think they are abandoning their edge of credibility if they are seen to be doing and playing their best."

Jamie Caring, MTV Networks UK & Ireland head of talent and artist relations

"Dido's success primarily comes down to brilliant songcraft. Sure, she's beautiful and charismatic, but most importantly she has a rare talent for creating timeless, classic, relevant songs, there are other attractive artists, with bigger, more impressive voices, that push more creative boundaries, but you can rely on Dido for consistent quality. She writes in a deeply personal way, recounting her own experiences with ...