Diamond Rio is an American Country music/Christian music band formed in 1984 in Nashville, Tennessee. Since its foundation, the group has comprised the same six members: Gene Johnson (mandolin, guitar, fiddle, tenor vocals), Jimmy Olander (lead guitar, Dobro, Danelectro, banjo), Brian Prout (drums), Marty Roe (lead vocals), Dan Truman (keyboards, organ, synthesizer), and Dana Williams (bass guitar, baritone vocals)..