Curtis Mayfield was a socially-conscious pioneer of funk who spread messages of hope to the African-American community through his music.  Because of his prowess for composing impeccable soundtracks, he was tapped to write tracks for his lady-friends Gladys Knight and Aretha Franklin, as well.  Unfortunately, he passed away too soon before he could contribute more to the world. Here is, perhaps, one of his most notable songs [also the title track] from the soundtrack to Super Fly.