Activist rock stars including Lady Gaga and U2\'s The Edge and Bono will give a concert next month celebrating global aid work by former US president Bill Clinton since he left the White House, organizers announced Tuesday. The music fest, including an acoustic performance by the U2 stars, will take place at the Hollywood Bowl on October 15 under the title \"A Decade of Difference: a concert celebrating 10 years of the William J. Clinton Foundation.\" The foundation works around the world to promote and organize improvements to healthcare, education, small business finance and other causes. The foundation and Yahoo!, which will provide live streaming of the concert, said \"an all-star group of the most influential and socially responsible artists in music, film, and television will come together to celebrate\" Clinton\'s work. \"I am proud that some of today\'s most influential performers are coming together to raise awareness about the work of my foundation,\" Clinton said in a statement.