Nick Ashford and Valerie Simpson's finest hour, the penning of this magical classic, "Ain't No Mountain High Enough"*, made all the more magical and classic by Marvin and Tammi.     https://www.youtube.com/watch?v=IC5PL0XImjw       Marvin, whose divine musical sweetness and soul was so tangible and transparent, was destroyed by Tammi's tragic death at the horrendously young age of 24  -  she ...