As many singers, also Johnny sang duets with famous singers and met many famous persons in his branch. I can tell you only some of them: June Carter (later became his wife), Bob Dylan, Luis Armstrong, Neil Young, James Taylor, Kris Kristofferson, Waylon Jennings, Willie Nelson, Roy Orbison, Jerry Lee Lewis, Carl Perkins etc.
And how he got his nick “The Man in Black“? It was about year 1970. In that time he had created this image. He started to wear all only in black. Long knee length coat, also in black. In the next year he wrote song „Man in Black“ as explaining this suite.
Jackson with June Carter
Blue Yodel No. 9 with Luis Armstrong
Girl From the North Country with Bob Dylan