By Ashley Parker on
Lupe, who recently climbed mount Kilimanjaro with Jessica Biel and Emile Hirsch to raise awareness about the world’s water crisis, teamed up with Linkin Park's Mike Shinoda. Jay-Z worked with U2's Bono and Swizz Beatz, a producer.
Guitarist The Edge said that Swizz called Bono, saying he and Jay-Z wanted to do something to help Haitians.
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