Keith Anderson says he used to be an optimistic and loving person, until his mom's diagnosis with brain cancer changed everything.

"I'm a pretty happy-go-lucky guy and can't say I've ever hated anybody or anything in my whole life, until a couple of years ago when my mom got cancer," the singer tells Nashville's Tennessean newspaper. "You see what it does, not only to her but to families, and I'm just committed to doing whatever I can to find a cure."

His mom unfortunately lost her brave battle in 2008, but for Keith, the fight continues. Joining fellow music stars Dean Sams (from Lonestar), Georgia Middleman, Brian White and Gary Burr, among others, Keith is taking part in a benefit as part of 'Songs for the Cure' to honor a special fourth grader, Savannah Swandal, who was diagnosed at the tender age of five with a rare and aggressive childhood cancer.

"She's just a beautiful child," Keith gushes, "and it's going to be a great night of songs. We're going to find a cure one day for this horrible disease."

In addition to doing all he can in the battle to end cancer, Keith is hard at work on a new album, after leaving his record label, Sony, last year. For more information on the benefit, to be held Thursday, Jan. 28 in Nashville, visit Keith's website.