Roy Thomas Bakerm, the British producer and engineer who worked with Queen, the Cars, Foreigner, and more, has died. No cause of death has been revealed. Baker was 78.

Born in London in 1946, Baker began his career at an early age, working at the city’s Decca Studios at age 14. During his apprenticeship, he served as second engineer to major producers as Gus Dudgeon (Elton John) and Tony Visconti (David Bowie, T. Rex) and worked on recordings by the Rolling Stones, the Who, Dusty Springfield, Moody Blues, Nazareth, Yes, Be Bop Deluxe, and more. He then worked at Trident Studios and helped Queen sign to Neptune, Trident’s record production company, and co-produced Queen’s self-titled album with the band and John Anthony. He went on to help produce four more Queen albums, including A Night at the Opera, the 1975 LP that features ‘Bohemian Rhapsody’.

In addition to his work with Queen, Baker produced the Cars’ first four albums, as well as records by Foreigner, Alice Cooper, Cheap Trick, Devo, Ozzy Osbourne, Sammy Hager, The Stranglers, Guns N’ Roses, and Smashing Pumpkins. “Roy taught me a lot about handling band personalities,” the Cars’ late singer-songwriter Ric Ocasek said in 2016. “He was an electronics whiz, a sound guy with a classical background for mic-ing the room’s sound. He got harmony. And he took things in stride — a very upbeat, elegant man. Spontaneous, too.”