A musical seeker since childhood, the 73-year-old’s journeys have taken him from lessons with Cecil Taylor to a formative tour of Africa and now work with the Outkast star. He explains why he’s still chasing the next chapter
The group that started at Antioch College in Ohio went to Africa and returned “transformed,” one of its members said. A new boxed set collects its little-heard albums from the 1970s.