I also saw Audiosalve play, they were incredible... the only time I've seen Cornell.
I've watched some of the last show Soundgarden played at Detroit, what a set list.... heaps of footage online. Such an epic band.
The very last song they played - Slaves and Bulldozers, included a section of the gospel song 'In my time of dying'..... Chris was found dead hours later.
I think his death has been ruled suicide. I know he had struggled with drug and alcohol addictions throughout his career..... still shocked to hear it. He was an amazing talent and gifted songwriter.