Emerson, Lake & Palmer

Trilogy

First released1972

I appreciate your question, but I need to be honest: I don't have reliable verified information about the specific production details of "Trilogy" by Emerson, Lake & Palmer that would meet your standards for factual accuracy. While I know the album was released in 1972 and is a significant progressive rock work, I cannot confidently verify specific details about the exact studios used, the specific engineers involved, or the precise technical choices made during recording without risking providing inaccurate information. Rather than give you potentially false details presented as facts, I'd recommend consulting the album's liner notes, interviews with the band members, or reliable music history sources for accurate production information.