Lady Gaga
Lady Gaga partnered with Virgin Mobile on her Monster Ball tour offering premium tickets to fans who volunteer their time to homeless youth organizations. Pretty good idea! She also has worked on efforts in Haiti and helped raise awareness for HIV and AIDS in Africa.
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Alicia Keys
The mega-talented Alicia Keys is not only a great singer but also is the key ambassador for Keep A Child Alive. She traveled in Africa and visited different households to discuss the AIDS epidemic. She is the official spokesperson for Frum Tha Ground Up which is meant to motivate American youth to achieve great things.