Ronnie James Dio, Tony Iommi, Geezer Butler and Vinny Appice will reunite for the first time in 15 years as Heaven and Hell to cast a dark spell over spring as the quartet tours the U.S.

Tickets will go on sale the weekend of March 9 for all 20 stops of the American leg (except Houston, on sale March 17), which is set to launch in Phoenix on April 22.

There will also be a special fan presale for all dates beginning Wednesday, March 7 at 12 Noon EST. The link for the presale is http://heavenandhell.frontgatetickets.com

4/22/2007 Phoenix, AZ, Dodge Theater
4/24/2007 San Jose, CA, HP Pavilion
4/25/2007 Los Angeles, CA, The Forum
4/26/2007 San Diego, CA, Coors Amphitheatre
4/28/2007 Albuquerque, NM, Journal Pavilion
4/29/2007 Denver, CO, Broomfield Events Center
5/1/2007 San Antonio, TX, Verizon Wireless Amphitheatre
5/2/2007 Houston, TX, Cynthia Woods Mitchell Amphitheatre
5/3/2007 Dallas, TX, Nokia Live
5/5/2007 Chicago, IL, Sears Centre
5/6/2007 Minneapolis, MN, Theatre@Target Center
5/8/2007 Cincinnati, OH, US Bank Arena
5/10/2007 Philadelphia, PA, Wachovia Arena
5/11/2007 Cleveland, OH, Tower City Amphitheatre
5/12/2007 Detroit, MI, Cobo Hall
5/14/2007 Albany, NY, Times Union Center
5/15/2007 Uncasville, CT, Mohegan Sun Arena
5/17/2007 Lowell, MA, Tsongas Arena
5/18/2007 Baltimore, MD, Merriweather Pavilion
5/19/2007 Holmdel, NJ, PNC Arts Center

The tour will follow in the wake of the band's highly anticipated Radio City Music Hall concert in New York City on March 30, which sold out in a matter of minutes.