I've been posting a lot of videos when Hurricane Katrina hit and its aftermath. Donita Sparks has a wonderful post about NOLA trying to recover:

I really enjoyed Christy’s post on Monday regarding the state of affairs in New Orleans a year after Katrina, Her link to the amazing Arabi Wrecking Krewe and the video of the great work that they are doing there for local musicians I found very inspiring. I wanted to list a few more places to donate money to help out displaced musicians in one of our most musical of cities...read on

She put together a great collection of songs on iTunes. You should check it out.