Yep, here it is, Duke Ellingtons 1943 version of It dont mean a Thing if it aint got that Swing. Swing, if done well is amazing, if not, it really comes across poorly. An interesting exercise is to take a good listen to Frank Sinatra singing Summer Wind. He really nails it. Then after a few pass listening, try to sing it, and capture the swing… yep, even for a bass player.
Next, run over to singsnap, and give a listen to a wide variety of folks trying to sing Summer Wind karaoke. Some absolutely nail it, and others, rather than getting the triplets right, either head towards eight notes, or doted eighth sixteenths.