Sway

I had been listening to the Shaft version of this song since 1999, thinking 'ooh that dance tune would arrange a treat' when I eventually realised (somewhere around 2005) that it was a Dean Martin classic from the 1950s, and its arrange-ability suddenly became much less surprising. This version starts with a mysterious opening, then the rhythm gradually insinuates itself into your blood. It is moderately demanding vocally, but then the song itself demands a certain degree of panache and sexual bravado from its performers.

Here it is performed by Fascinating Rhythm in 2015: