Webb’s concerns over his song’s shortcomings were addressed in the recording studio by adding a tremolo-infused Dano bass[11] melodic interlude performed by Campbell, who had first made his reputation in the music industry as a session guitarist with the group of uncredited Los Angeles backing musicians known today as “The Wrecking Crew”, many of whom played on the recording.[9][3][12] One of them, bassist Carol Kaye, contributed the descending six-note intro.[9] A second six-note bass lick improvised by Kaye was copied for strings by De Lory and used as a fill between the two rhyming couplets of each verse.[13]
https://en.m.wikipedia.org/wiki/Wichita_Lineman
That what wiki says.
Some things on wiki can be trusted. 🤔😂👍