Many people do not know that Barry Cowsill died in Katrina. I had his autograph at one point, but long lost. He was my favorite. Recently went on a kick watching what happened with the Cowsills on YouTube and it was a really sad story. Abusive father...had bad effect on all the kids...sigh
The oldest {I believe} brother Billy passed about that same timeframe in Canada. They did a live taped concert which also got released on CD Billy Cowsill Benefit Concert and sang at least Partridge Family song on it. It's also on Youtube. Barry Cowsill is performing in that concert so it was before Katrina. He worked with quite a few bands from what I've read.