hall jazz bad is with us now. ben, good to see you. >> thank you for having me. >> so no hesitation whatsoever that you wanted to be part of this huge event. it's like ten hours over two different stages there in new orleans today. >> absolutely. the most powerful voice that we have as musicians is our music. and this is a way to get out the message that we're facing one of the largest catastrophes in our history. >> so what will you all be performing today? >> we're actually going to be performing a song we recorded just two days ago with lenny kr kravitz and mos def. i woke up one morning, over coffee with a friend started talking abtd hurricane and what we could do. not the hurricane but the oil spill and what we could do and what we could do to get out there and make our voice a