Question: When was the American audio engineer and clandestine chemist died who recorded the album Live at the Carousel Ballroom 1968?
Sentence (from "Yurii Barybin"): Yurii Barybin (born in Kherson , Ukraine) is a sound producer and mixing engineer, production manager, technical director, live sound engineer (FOH and monitor), audio systems engineer, personal in-ear monitor systems designer, recording and mastering engineer, author of the patented Diversity Source Monitor Audio Mixing Technique.
Relevant evidence: No