Career: John's first solo album flopped in 1969, but its follow-up and the single Your Song were hits. Rocket Man in 1972 marked the beginning of an incredible run of success - 16 straight Top 20 hits (15 of which went Top 10). He has sold more than 250 million records worldwide. In 1994, he won an Oscar for Can You Feel the Love Tonight, from Disney's The Lion King. A version of Candle in the Wind became the world's best-selling single, raising more than £20million for the Diana, Princess of Wales Memorial Fund. He has collaborated with Bernie Taupin on more than 30 albums, and continues to record and tour.

Career: Osbourne sang with several local groups before forming Black Sabbath with guitarist Tommy Iommi, bassist Geezer Butler, and drummer Bill Ward. Their debut album was released in 1970, and they scored a huge hit with Paranoid. Following the death of his father in 1977, Osbourne developed drug problems. The band kicked him out (although they reunited in 2013), and he went solo. His 1980 debut album, Blizzard of Oz, was hugely successful, but he checked into rehab in 1984. He struggled to remain sober for years, admitting in 2013 that he'd fallen off the wagon, but was clean again. He is probably now best known for his family's fly-on-the-wall documentary series The Osbournes, which ran from 2002 to 2005.

Career: Meat Loaf stayed quiet through the 1980s, putting out a series of records which never got any airplay or chart position in the US. He appeared in films Out of Bounds (1986) as a pilot, and The Squeeze (1987) with Michael Keaton. But after reuniting with Steinman, he delivered a powerful sequel Bat Out Of Hell II which went to number one in the US and UK. Bat II has now sold an excess of 20,000,000 copies. It is considered one of the biggest musical comebacks in music history. He won a Grammy for the stand-out song I'd Do Anything For Love (But I Won't Do That). Movie credits include Crazy in Alabama (1999) and Fight Club (1999). He released his latest album, Hang Cool Teddy Bear, in 2010. In a bid to boost sales of the album in America, he agreed to be one of the contestants on the 2011 series of The Celebrity Apprentice.