If somebody put a gun to my dog's head and told me to pick a favorite jazz single or the pooch gets it, I wouldn't do it. Then again, I don't have a dog.
But if I made a list of potential choices in case I'm ever faced with such a decision, I'd probably put "Blueport" from Gerry Mulligan and his concert jazz band on it. (Verve one-disk version at the Village Vanguard, two renditions in the Mosaic box set.)
Came up on the Shuffle coming back from lunch and had my feet moving, 90-degree heat and like 90 percent humidity aside. In other words, catchy tune and, in this case, legendary musicianship. The speed at which Mulligan could manipulate his baritone is really evident, and amazing.