Two kinds of memory of Jon - musical and familial. During Jon's time in the Cambridge department Jon and I would occasionally meet up in the evenings to play songs, with 'play' loosely meant in my case. I would caterwaul and strum some '60s pop while Jon brilliant bass would make it sound like music. He had a wonderful musical ear: just a snatch of some obscurity by, say, Major Lance or Jay and the Americans and he had the chords down and was teaching me them.
Second, as her father, I am convinced that Charlotte would have had a distinguished career in visual neuroscience no matter what. But Jon's faith in her abilities and his natural kindness put her on the fast track.
