T.I., YG and Treach also performed on behalf of hip-hop superstar
Rappers trade verses on "Bring Em Out," "O.G. Original Gangster"
Garth Books, T.I., Nick Offerman, original Prince and the Revolution members also set to address festival
"We have been underserved, underprivileged and unfortunate for far too long," rapper writes in third in series of candid open letters
"I can’t help but ask in the midst of our nation's calamity and discord: What do you want US to see?" rapper writes
"Not only did you impact a nation, but you defined a culture and you shook up and woke up a generation," rapper writes in first of open letter series
Rapper teams with The-Dream, B.o.B and Charlie Wilson on expansion of September EP 'Us or Else'
Rapper wanted kids to know he "did everything that the Constitution allows me to do to show my objection to this decision"
New Spotify series 'Drawn and Recorded' illustrates music history lore
Ms. Lauryn Hill, Robin Thicke, Common, T.I., Lil Yachty and more set to perform at all-star charity gig
Plus, Danny Brown's latest manic offering, Prep's ultra-smooth yacht-pop
"I continually see injustices happening and I had to speak out," rapper says of 'Us or Else' EP
Comedian's hip-hop persona shares first track off upcoming 'What Now? (The Mixtape)'
Trial was "a cascade of legal errors warranting this Court's reversal," opening brief states
Accused rapper seeks unspecified damages, legal fees for "negligence" of New York venue