By Kevin Tibbles, NBC News correspondent

There just aren't words to aptly describe what happens to a person when they encounter the likes of Deforia Lane.

I've seen it happen with school kids, adults, expectant mothers and folks fighting for their lives in a hospital bed.

I can also tell you it happened to me, and to producer Colleen Dudgeon, when we visited Cleveland's University Hospitals Case Medical Center.

Deforia Lane is a teacher, an opera singer...and a cancer survivor. She's made it her goal to bring, through her gift of music, a few rays of hope, comfort and sunshine into the lives of hospital patients. Perhaps she will sing "Lean on Me"... or a moving version of "You'll Never Walk Alone"; anything to lift sagging spirits and dispel fear.

Colleen and I followed Deforia and her little pushcart filled with musical instruments as she 'made the rounds'; and on Nightly News tonight you will have the privilege of meeting this remarkable woman for yourself.

"I can't diagnose it and make it go away", she says. "But what I bring them is what's in here (her heart), and it's music and it's love."