** FILE ** In this Oct. 31, 2010, file photo, musician Alice Cooper performs his Halloween Night of Fear show at The Roundhouse in north London. Cooper, Jackson Browne, David Crosby and Graham Nash will perform March 10, 2011 in Tucson, Ariz., to benefit a charitable fund established after the January shooting that killed six people and wounded 13 others. (AP Photo/Joel Ryan, File)

Photo by: Joel Ryan

** FILE ** In this Oct. 31, 2010, file photo, musician Alice Cooper performs his Halloween Night of Fear show at The Roundhouse in north London. Cooper, Jackson Browne, David Crosby and Graham Nash will perform March 10, 2011 in Tucson, Ariz., to benefit a charitable fund established after the January shooting that killed six people and wounded 13 others. (AP Photo/Joel Ryan, File)