It was 'just another day' in Paul McCartney's studio.
Paul came in and said we have a guest today. A short while later Johnny and June Carter Cash walked in.
I tended to speak when I was spoken to and generally keep a low profile. So they had this song they had written they wanted to record. It wasn't one of Johnny's greatest songs.
I just got on with the job. This was before multi-channel tv (in the UK) and pre-internet. In the last ten years I've watched a bunch of Johnny Cash documentaries and live concert films. Had I known more about him I would have been in more awe. Of course I knew he was legendary and a huge star, especially in America, but I guess if you were too star struck you couldn't do your job.