My Vinnie Year - part 3 - superimposed metric modulation

This is a technical piece by Vinnie Colaiuta, which accompanied his 1987 Percussioner magazine interview, and he now shares with us on  vinniecolaiuta.com. I spent considerable time with this- way too much, actually, considering that it's not exactly a daily-user, and there were more ahem pressing matters for me to attend to.

Be sure to read his explanatory text, and remember his closing advice, with a big emphasis on the if:  

"...if you find that you have the place where you can use something like this, above all else, be musical!"