Pop superstar Bruno Mars will be taking the stage at US Airways Center at any moment. The arena is packed. Among them is a teen who says he's alive because of Bruno Mars's music.
This teen has survived 31 brain surgeries, and he also has a handful of life changing medical conditions.
His family says Bruno Mars' music has helped him recover and keep smiling.
These tickets are treasure to Michelle Campuzano and her son David.
"I watched him miss out on so much, he can't run and play the same games other kids play and there's been a lot of sacrifices we've had to make," says Michelle.
16-year-old David was born three months premature. He has hydrocephalus, bleeding in the brain, epilepsy, cerebral palsy, and bronchular pulmonary dysplasia. Last month his respiratory problems nearly ended his life.
"When we got into the ER I noticed something right away he started seizing."
His seizure lasted two hours. His temperature topped 105 degrees.
"A doctor came in and just said, when I talk about it feels like it just happened, I'll never forget this, the doctor came in… he'd known us since David was born he put his hand on my shoulder.. ‘He's fought a good hard fight he's courageous he's amazing his smile inspires the world but he's not going to make it through this one,'" recalls Michelle.
Michelle didn't leave David's side, not even to shower. She just finished college while caring for David and refused to let her son pass away on the brink of their brighter life together.
"I was scared to leave him, so I would just play music and all of a sudden he was coming to and being awake-- but he wasn't really active. And Bruno Mars came on and he sat up and started doing the David bounce. Anybody who knows David knows the David bounce and he just started dancing in his hospital bed."
Within 24 hours of being taken off a respirator, David was dancing to Bruno Mars music.
"Cause we kind of needed something to hold onto. It was sleepless nights and crying and not knowing what was next. That gave us all something to hold onto, like he'll dance again."
Wednesday night, David will be dancing where 16-year-olds should -- at a concert, not a hospital.
"David almost dying has really taught me how to live, so all those things that are out of our control that we can't change, those don't matter anymore. So it's these moments that I live for these experiences to have with him."