Many years ago, a friend of Mateo Messina called him into his office and told him about Children's Hospital in Seattle. He said that they made the last year of his daughter's life wonderful. After she passed away from brain cancer, he told Mateo to check out the playroom and possibly volunteer by playing the piano.

One week later Mateo started playing piano for the kids and staff in the playroom. Later that year he produced his first Children's Hospital Benefit Concert: Human. Ten years later Mateo still plays regularly for the kids at the hospital and produces an extraordinary concert to benefit Children's Hospital and the entertainment of his fans.

Although Mateo's music career has taken him to Hollywood California, he continues to play for the children during his monthly visits to his hometown of Seattle.

Mateo's studio, Kind Studios, provides music for film, television, gaming and multimedia.