KRS-One made a song not to raise money, but to speak directly to the people and educate them on what to do if a disaster strikes, This song could save your life one day . Everybody should hear it. Its kind of genius because its a rhyme so its easier to remember some of the things he says.
Disaster Kit
https://www.youtube.com/watch?v=-WfnbFUmoic
Mos def made a song after hurricane Katrina criticising George bush and the way the government responded. He once got arrested for rolling up outside the MTV awards and performing it without permission.
Katrina Klap (dollar day)
https://www.youtube.com/watch?v=Qo8NF9vv6TA
"like where the f*** is Sir Bono and his famous friends now"