This is one of those sublime delights a lifetime of music listening affords to anyone who's undertaken it. (& Peterson is more complex than his persona might suggest.)
All I can say is that NHØP had a right hand that a pretty decent Flamenco Guitarist would ha' been proud to own -and on a BASS! -That, taste, creativity and the need to be challenged.
Who else would he play with but Oscar?!
When I make my all time greatest list, Oscar is far and away Number 1 piano. And Ray Brown is there on bass, but Neils Pedersen is a very very close honorable mention. I never get tired of listening to this one. This is a definition!!!!!!!!
Ray Brown who took piano lessons before he decided to be a bassist seems to be highly suited to sensing the most fitting chord improvs he plays with such acute timing. The tone of his bass compliments Oscar's playing better than that of Niels Pedersen whose gift is fingerwork that lends to his speed.