Abdullah Ibrahim gave a farewell concert last year - I couldn't make it, and I knew I would regret it, but that's my fault for discovering his music too late. He had come through NYC before, even recording the essential live album
Yarona at a jazz venue that no longer exists (albeit over a decade before I finally visited NYC).
His catalog in the CD era was a bit overwhelming for a variety of reasons - he was very prolific on smaller labels that weren't likely to have stable or broad distribution in the U.S. As a result, it can be a mixed bag of endless compilations that go in and out of print.
One I'd highly recommend is
Voice of Africa, which should be easy to find on an inexpensive (and well-mastered) CD. It's possibly the best introduction you can find for his music, partly because it includes the original, definitive version of "Mannenberg."
Strangely, Spotify in the U.S. does not have the original version of "Mannenberg," only later interpretations that to be fair are wonderful to hear.
As you can see from the cover art used for this YouTube upload, the recording was also the title track to an album released under his former name, Dollar Brand.
Water from an Ancient Well is another album I would highly recommend, likely the best one he made when he was performing and recording with flautist Carlos Ward. A few years later he released
African River with a completely different group that has some overlap in repertoire, but they're great interpretations as well.