This clip comes from a late 1980s TV how called Sunday Night (AKA Night Music) hosted by American saxophonist David Sanborn and English pianist/singer/composer Jools Holland. The latter is joined by Dr. John for some "four-hands" boogie woogie piano.

According to Sanborn** the "precise fingering and split second timing" required by such a duet make it "one of the most demanding and dangerous pieces of music to perform".

**So says Sanborn in his introduction to this performance, which you can see here, but in version of the clip with inferior audio and video.