I have the Tour Tempo book and CD. I find it very useful in doing just that: controlling your tempo. You hear a series of beeps (or the words, "swing, set, through) and you time your takeaway, top-of-swing and impact to those beeps. It will improve your tempo even if you just listen the CD in your car. I firmly believe that this product would fix Charles Barkley's "problem" unless he is tone-deaf or has absolutely no rhythm.