John Mayer, Neil Young, the Rolling Stones, Kanye West, Kelly Clarkson, Sheryl Crow, Dashboard Confessional, Kid Rock, Melissa Etheridge, Paul McCartney, Motley Crue, Brian Wilson, Goo Goo Dolls, Audioslave, Maroon 5, Good Charlotte, Common, Simple Plan, Lynyrd Skynyrd and Staind are among the artists added to "ReAct Now: Music and Relief," a concert to aid the victims of Hurricane Katrina, on September 10th on MTV, VH1 and CMT.

Other additions include artists with Lousiana and Mississippi ties including 3 Doors Down, Trent Reznor, the Neville Brothers, Marc Broussard, Cash Money's Baby and Lil' Wayne, and the Radiators. They join Green Day, Usher, Dave Matthews Band, Alicia Keys, Ludacris, Rob Thomas, Linkin Park's Chester Bennington, David Banner and John Mellencamp. The relief concert will be staged simultaneously in New York, Los Angeles, Nashville and Atlanta, with opportunities for viewers to phone in Red Cross donations.