He replaced Tom Wilson on “Highway 61” (but not before the latter produced “Like a Rolling Stone)
From the Telegraph’s obituary:
Despite being told by Dylan’s managers that he would be sacked if he raised the idea again, it was Johnston – a country-music-loving Texan – who persuaded Dylan to re-locate to Nashville to work with session musicians there. The outcome was Blonde on Blonde (1966), often voted the best rock album ever made, not least because it captured the spontaneous ferment of Dylan’s talent. Johnston facilitated that.
(I love this movie – I watched it 3 times back-to-back on a flight home from Singapore)
But he’s best known for the lead in to “To be alone with you” as Dylan asks his producer whether they’re recording
Here’s the Telegraph’s obituary – behind a paywall, but you’re good for 10 articles a month