Two Neil Youngs on a tree stump sang “Two Neil Youngs on a Tree Stump†on Tuesday’s Tonight Show. One of the Neil Youngs was Neil Young and the other Neil Young was Jimmy Fallon. Kind of like when Pocahontas sings to Grandmother Willow in Pocahontas or when Cinderella sings to her mom-tree in Into the Woods, the tree stump of “Two Neil Youngs on a Tree Stump†is not just scenery, but an essential emotional truth. This marks the second time these two Neil Youngs have paired up, or, as it’s being released abroad: Two Neil Youngs Part II: Is This Getting Old Yet?