Will.i.am, Ed Sheeran and Mumford & Sons have recorded new versions of famous protest songs to highlight issues of global poverty.
They are joining forces with dozens of musicians to campaign to get world leaders to focus on poverty ahead of the G8 summit in Northern Ireland.
It has been backed by the One Campaign with videos of the protest songs being shown online to inspire a new generation to fight against injustice.
Music is a powerful tool in galvanising people around an issue. There's no better way to get your point across than to put it in a beautiful song.
Other stars enlisted by the campaign include One Change co-founder Bono, Sting, Elvis Costello, Green Day and chart-toppers Macklemore & Ryan Lewis.
The One organisation has also worked with filmmakers and actors including Richard Curtis and Chiwetel Ejiofor to create a half-hour film.
It will be projected on to the side of London's Tate Modern tonight, tomorrow and Thursday at 10pm.