What was DMX doing at a Alicia Keys concert? I have no idea, but it always a good day when you can catch him perform. The Ruff Rider general made a quick special guest apperrance last night at  Madison Square Garden, performing“Ruff Ryders Anthem” and “Party Up”. His signature energy was in full display in the 30-second clip of him performing along side Swizz Beatz at the Alicia Keys Concert. I can only imagine how hype the crowd must have been to see Dark Man X.