It'll be heaven for Black Sabbath fans when Heaven And Hell -- the rechristened, Ronnie James Dio-fronted version of the band -- plays a 20-date U.S. tour in April and May.

It'll be heaven for Black Sabbath fans when Heaven And Hell -- the rechristened, Ronnie James Dio-fronted version of the band -- plays a 20-date U.S. tour in April and May.

The jaunt, which follows an 11-show Canadian swing and a March 30 stop at New York's Radio City Music Hall, begins April 22 in Phoenix and finishes May 19 in Holmdell, N.J.

The tour accompanies the April 3 release of a Rhino compilation, "Black Sabbath: The Dio Years," which features three new songs recorded by the quartet of Dio, guitarist Tony Iommi, bassist Terry "Geezer" Butler and drummer Vinny Appice. In addition, the limited edition "Black Sabbath: Live at Hammersmith Odeon" comes out May 1 on Rhino Handmade.

"Heaven and Hell" was the title of Black Sabbath's 1980 album, the first with Dio after the group split with founding frontman Ozzy Osbourne. The group members acknowledge that touring under a different name will be challenging but feel that it's the right thing to do at this time.

"By calling it Heaven And Hell, you know exactly what you're getting and it doesn't interfere with anything," Iommi tells Billboard.com. "There's no, 'Is it really Black Sabbath?' and all that rubbish. Of course, we have been out as Black Sabbath with this lineup, so we could do it. But I think it's best to go as Heaven And Hell."

Iommi said that even though this lineup performed some of Sabbath's Osbourne-era classics in the past, this year's repertoire "is entirely Dio stuff ... It's great for Geezer and myself, because the last 10 years we've been out playing Sabbath stuff. It's nice to stretch ourselves a bit and play other stuff. You know, this'll be the first time I've ever been out under a different name and not played 'Paranoid!' We'll see how long it lasts."

After the U.S. leg, Heaven And Hell plans to play around the rest of the world, including several European summer festivals. Dio says that the group intends to film and record at least one show for a future release.

A new Black Sabbath album and tour -- with Osbourne and original drummer Ward in tow -- is expected for 2008 but not yet confirmed, according to Iommi and Butler.