I concur with Vquester. The actually feel (groove) of the classic "Take Five" swing tune is actually: 1-2-3 - 1-2, and NOT counted straight: 1-2-3-4-5. Listen to the classic Dave Brubeck recording & you'll hear this. Don't forget that a tune's meter & rhythm must be FELT (in your body) and can't be merely played (note for note) from written out notation because notation (dots) can't accurately capture exactly what must be felt. The main rhythmic difference between pop & classical music is that in pop/jazz, the (back) beat (2&4) is emphasized, whereas in classical music, the first beat of the measure is strongest followed by 2, 3 and then 4 (weakest).

Graham, good luck, and btw, happy birtday. You're dewfinitely one very healthy & fit 68 year old guy. Congratulations.

Scott