Music Row artists Ronnie Dunn, left, and Gary Chapman, center, join Dr. Hal Moses during a tour of the Monroe Carell Jr. Children's Hospital at Vanderbilt. Dunn and Chapman are members of the board of the T.J. Martell Foundation, which met at Vanderbilt this week and presented a check for $1.2 million in its ongoing support of cancer research in the Frances Williams Preston Laboratories in the Vanderbilt-Ingram Cancer Center.