Meet The Zimmers - the world's oldest rock band which has a combined age of over 3,000.
The 40-strong troupe is led by 90-year-old lead singer Alf.
The band includes pensioners fed up in old people's homes. It is a world that feels closed off from society: a world of afternoon naps and daytime television and five o'clock suppers.
All feel isolated or imprisoned, and a few are even concerned for their welfare.
And it is not just those in the old people's homes who are cut-off.
Three-and-a-half million old people live alone in the UK.
Pilgrimage to Mecca
Many rely on bingo as a social activity: a staggering one in six pensioners regularly play. But the country's biggest chain, Mecca, recently announced it was closing eight of its bingo halls.
So The Zimmers also decided it was time for a trip to the head offices - a pilgrimage to Mecca - to tell the bingo bosses just how much was at stake.
But it is the charity single - released on 28 May - which they hope will make the biggest noise.
To prepare for action, The Zimmers took over the famous Abbey Road studios to create a cover version of The Who's classic song "My Generation", to show that old people should not be brushed under the carpet.
And with U2 producer Mike Hedges on board, as well as pop heavyweight Geoff Wonfor (who shot the Band Aid video), the OAPs are hoping to break into the Top Ten.
World phenomena
With the single not even released yet, it seems as if Zimmers have touched a nerve around the world: media from Germany, America, Canada, Iceland, Israel, France, Brazil, and Australia have all jumped on the Zimmers Bandwagon. Even Japanese GQ wanted a piece of them.
There have been radio appearances, talk shows and a gig at a London nightclub.
Pensioner power has even come to MySpace and You Tube.
The next step is to try to conquer America.
Power To The People: The Great Granny Chart Invasion was broadcast on Monday 28 May 2007 at 2100 BST on BBC Two.
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