Andre Previn and Oscar Peterson playing a duet - 06/17/19 10:38 AM
The duet starts at 2:50.
I hope this isn't a repost, it's quite an old video but I just watched this and I was totally mind-blown, the way they were both in sync, the way they both mimic each other and just build on each other's solos. Crazy. Just a few days ago I was watching Previn accompanying Rubinstein in a piano concerto as a conductor, and now I see him improvising side-by-side with a jazz legend.