They've announced a day of massive concerts to try to highlight the problems of poverty and starvation in Africa.
The difference this time is that this time - instead of raising money - they're hoping to put pressure on the world's richest leaders at the G8 summit.
But, can the new Live 8 concerts really make a difference to a continent where things don't seem to have got any better in the past two decades?
We talked to one of those involved in the Live 8 project - the writer Richard Curtis - whose credits include Notting Hill and Love Actually
All-star line-up
The free Live 8 will be held in London's Hyde Park on 2 July with concerts in Philadelphia, Paris, Rome and Berlin.
Madonna and Sir Paul McCartney are among stars playing in London while Stevie Wonder is on the US line-up.
A text message lottery is being held on 6 June to determine who will gain tickets to the UK concert.
Listeners to breakfast shows on BBC and commercial radio stations will be asked to send a text message at 0800 BST containing the answer to a multiple choice question. The winners will get two tickets to the show.
It will also be shown on big screens in seven cities across the UK, and shown live on BBC TV and radio.
Can Live 8 make a real difference? You can use this form to e-mail your views to Breakfast:
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watch Breakfast's Africa debate 
Africa's problems are entirely due to mismanagement and corruption. Bailing them out (again) is what they have come to expect. 
Images from Live 8
