Do you know the music of gospel great Sister Rosetta Tharpe? Have you heard phenomenal South African singer Simphiwe Dana? And check out this 23-track cover of What’s Going On featuring Marvin Gaye, Trus’me, Sandra de Sa, Till Bronner, Richie Havens, Keb’ Mo’, Everette Harp, Marlena Shaw, Dirty Dozen Brass Band, Sounds of Blackness, D’Atra Hicks, Stephanie Renee, Aretha Franklin, Nona Gaye, Smoma, and Gil Scott-Heron.