In October 2006, Dio joined Black Sabbath members Tony Iommi, Geezer Butler, and former Black Sabbath drummer Vinny Appice to tour under the moniker Heaven & Hell, the title of the first Dio era Black Sabbath album.
They chose the name Heaven & Hell as Iommi and Butler were still in Black Sabbath with Osbourne and felt it was best to use a different moniker for the Dio version of the band.
Original Black Sabbath drummer Bill Ward was to be involved in this project, but later withdrew.

In 2007, the band recorded three new songs under the Black Sabbath name for the compilation album Black Sabbath: The Dio Years.

In 2008, the band completed a 98-date world tour.
The band released one album under the Heaven & Hell name, The Devil You Know, to critical and commercial acclaim.
They also had planned to release a follow-up in 2010.
In October 2006, Dio joined Black Sabbath members Tony Iommi, Geezer Butler, and former Black Sabbath drummer Vinny Appice to tour under the moniker Heaven & Hell, the title of the first Dio era Black Sabbath album. They chose the name Heaven & Hell as Iommi and Butler were still in Black Sabbath with Osbourne and felt it was best to use a different moniker for the Dio version of the band. Original Black Sabbath drummer Bill Ward was to be involved in this project, but later withdrew.
In 2007, the band recorded three new songs under the Black Sabbath name for the compilation album Black Sabbath: The Dio Years.
In 2008, the band completed a 98-date world tour. The band released one album under the Heaven & Hell name, The Devil You Know, to critical and commercial acclaim. They also had planned to release a follow-up in 2010.
Ronnie James Dio