Ok, Nat, live, quartet, 1953.
He had really just begun (relatively) to penetrate the mainstream pop market, but it definitely had begun. "Unforgettable" was 1952, and then "Pretend" hit in 1953. After that...
This should be an interesting set, possibly quite transitional in terms of repertoire and presentation. I hope that they are able to include between-song patter, such as exists.
I'm interested, for sure!