Pacific Chorale’s first-ever presentation of Vaughan Williams’ powerful plea for peace, Dona Nobis Pacem, honors the composer’s 150th year, and features Deanna Breiwick and Grammy Award-winner Dashon Burton as soloists. This closing program to the Chorale’s 2021-22 season also includes a new work by former Composer-in-Residence Tarik O’Regan featuring poetry by Marcus Omari, a West Coast premiere by longtime collaborator Frank Ticheli, Pulitzer Prize-winner Caroline Shaw’s playful pairing of choir and string orchestra, and an exuberant Walt Whitman setting by Jake Runestad.