Sherbet, Mondo Rock, others reunite.

Twenty-seven hit Australian acts from the 1970s and 1980s will go out on tour in the Aussie spring for the "Countdown Spectacular".

The tour takes its name from the iconic Sunday night TV show "Countdown" which screened 1974 to 1987 on the Government-run ABC television network.

Reuniting are Sherbet, Hush, Mondo Rock and the Chantoozies while singers from the Sports, Ol'55, Moving Pictures, Pseudo Echo, Eurogliders, Kids In the Kitchen, Real Life and the Models will represent their catalogs.

Blues diva Renee Geyer, John Paul Young and British pop singer Leo Sayer, who now resides in Sydney, will also perform.

"I've been working on this for five years, and I believe it'll take the country by storm," Michael Gudinski, managing director of Melbourne-based Frontier Touring Company tells

"It's got that 'unforgettable experience' factor, with acts reforming and a three hour show with 40 back to back hits."

Frontier will on May 29 initially release 60,000 tickets priced at A$159 ($121) and A$99 ($75). The tour will roll out to six arenas from Aug. 30 to Sept. 17.

"We're right behind it," says Steve Smith, Melbourne based GM of Australian Radio Network. "The success of our Classic Hits brand tells us people love going back to a time when things weren't so hectic, which is why this tour will work so well."

ARN's Classic Hits network, aimed at 35 to 55 year olds, will promote the tour, as will ABC radio and television.

Sources believe "Countdown Spectacular" will match the 200,000 sales of "It's A Long Way To the Top". That 2002 tour, by Michael Chugg Entertainment and Jacobsen Entertainment, focussed on the 1950s to the early 1970s. Its success revealed a huge untapped baby boomer market downunder for domestic tours.

In July, the ABC, Gudinski's record label Liberation Music and its distributor Warner Music Australia will release a three-CD, two-DVD history of the original TV show, along with reissues from Sherbet, who had a No. 4 hit in the United Kingdom with their 1976 single "Howzat" (Epic).

The highlights of the September shows will be screened November as part of the ABC's 50th anniversary celebrations. A CD and DVD will be out before Christmas through ABC, Liberation and Warner.

Australia Wide Licensing (AWL) will release a range of "Countdown" branded T-shirts, trivia/DVD games and various memorabilia.