His other engineering credits include Jimi Hendrix, Joe Cocker, Chuck Berry, Eric Clapton, and Emmylou Harris.
[2] Halverson, a bass trombone player in the Dominguez Hills Junior College all-star jazz band, met engineer Wally Heider during a 1960 recording session at United Recording, and the two formed a friendship.
After Halverson left Beneke's band in 1964, Heider hired him as assistant engineer at the newly opened Studio 3 in Hollywood.
[2] In early 1969, Halverson engineered Crosby, Stills, & Nash's self-titled debut studio album.
[2] Halverson's engineering credits include Cream and Eric Clapton, CSNY members Stephen Stills and Graham Nash, Jimi Hendrix, Joe Cocker, Chuck Berry, and Emmylou Harris.