David Crosby is ensconced with a very elite group of musicians who used their songs and harmonies to end a war, discrimination and government wrongdoing. Bob Dylan and Joan Baez are others in this small group of troubadours that made a difference in the 1960's and 70's.

The New Mongrels, a collective musical society, have a long history that goes back to the Civil War. As the story goes, a soldier named Henry Brooke who came back from the bloody war shell-shocked and deaf in one ear had an idea.

This week our playlist includes music by Hank Williams, Lil Scrappy, Ryan Adams, Sly and the Family Stone, and more.

Kent State is America's Tiananmen Square. The photo of a young girl kneeling over the body of a dead student is etched on our collective retinas. But all these years later, it is still hard to comprehend. There is no resolution of this tragedy.

This Friday, Bette Midler is throwing her annual Hulaween Ball, a lavish Halloween wonderland in the Waldorf Astoria, with a little hula-flavor -- a nod to her Hawaiian roots.