CLAREMORE, Okla. (AP) -- Country music star Garth Brooks is suing an Oklahoma hospital, saying it reneged on a promise to name a building after his late mother in exchange for a $500,000 donation.
RELATED: Craziest Celeb Lawsuits
Brooks' lawsuit against Integris Canadian Valley Regional Hospital in Yukon seeks the return of the December 2005 donation. The trial began on Tuesday.
Brooks says hospital officials showed him mock-ups of buildings bearing Colleen Brooks' name and told him his donation was earmarked for such a project.
RELATED: Country Crooners: Who Said it?
The hospital denies any wrongdoing and in court filings says Brooks' donation was "anonymous and unconditional."
Dressed in jeans and a black cowboy hat, Brooks shook hands with lawyers and made small talk before proceedings began on Tuesday. He was accompanied by his wife, country singer Trisha Yearwood.
RELATED: Celebs Gone Country