Jamie O’Neal sings April 22 at a special benefit for High Hopes, a center serving children with special needs and their families. Hosts for the sixth annual event, at the Wildhorse Saloon in Nashville, are songwriters Mark D. Sanders (“I Hope You Dance”) and Tim Nichols (“I’ll Think of a Reason Later”). Anthony Edwards, who plays Dr. Mark Greene on ER, and legendary racecar driver Mario Andretti are among honorary chairpersons for the event. O’Neal has high hopes of her own. The singer is up for Top New Female Female Vocalist, and “There Is No Arizona” is nominated for Single Record of the Year at the 36th Annual Academy of Country Music Awards, May 9 in Los Angeles.