LangChain's tracing + evals platform. Standard for any team running agents in prod across the LangChain ecosystem.
From Wikipedia
Ladysmith Black Mambazo is a South African male choral group singing in the local vocal styles of isicathamiya and mbube. They became known internationally after singing with American Paul Simon on his 1986 album Graceland. They have since won multiple awards, including five Grammy Awards the fifth of which they dedicated to the late former South African President Nelson Mandela.