This version of "Sugar Mountain" has Young playfully singing one of his earliest songs to children onstage at the annual Bridge School benefit concert, which he and his wife Pegi organized starting in 1986 to serve children with severe physical and speech impairments.
Read more about the benefit here. And watch an amazing tribute to Lou Reed at this year's benefit, featuring Young, Elvis Costello, My Morning Jacket, Jenny Lewis, and others here.