By Iain Blair LOS ANGELES (Reuters) - Forty-three years ago Black Sabbath released its debut self-titled album, a collection of songs inspired by occult themes and powered by heavy-metal guitar riffs. Now, three of the original band members - singer Ozzy Osbourne, guitarist Tony Iommi and bassist Geezer Butler - and drummer Brad Wilk, of Rage Against the Machine, are releasing a new album, "13," and planning to tour the world to promote it. ...

NEW YORK (Reuters) - Cher will appear on the season finale of the singing competition series "The Voice" on June 18, making her first live TV performance in more than 10 years, NBC said on Monday. The singer and actress, who has won an Oscar as well as Grammy and Emmy awards, will perform "Woman's World," a new single from her album of the same name which is to be released in September, her first in 12 years. Cher's record-breaking 1998 single "Believe" reached No. ...

LONDON (Reuters) - British folk-rockers Mumford & Sons have canceled three sell-out concerts in the United States this week after announcing on Tuesday that bassist Ted Dwane needed emergency surgery for a blood clot on the brain. The band, which won Album of the Year for "Babel" at the Grammy awards in February and the British Group award at the BRIT awards, said Dwane had felt unwell for a few days and was taken to hospital on Monday for emergency treatment. "The scans revealed a blood clot on the surface of his brain that requires an operation," the band said in a statement on its website. ...

By Tim Kenneally LOS ANGELES (TheWrap.com) - Ringo Starr is developing quite the second career as a literary mogul. First came news that the former Beatle is releasing an interactive book of photos from his days with the iconic group. And now he's planning a children's book based on his Beatles song "Octopus's Garden." Simon & Schuster Children's Books said Tuesday that it will publish a picture book edition of the song from the 1969 Beatles album "Abbey Road." The book will include a CD featuring previously unreleased music from Starr and an audio reading of the story. ...