Dierks Bentley was asked to become the newest member of the Grand Ole Opry during his Tuesday night (July 27) performance at the House of Blues in Los Angeles. About an hour into his set, Opry member Marty Stuart surprised Bentley by walking onstage and asking, "Will you do it? Will you marry the Grand Ole Opry?" Bentley immediately replied, "Hell, yeah!" After the invitation, Bentley was left speechless and had a hard time getting through his next song, "What Was I Thinkin'." "This is the greatest night of my life," Bentley told the audience. "Thank you guys for sharing this with me. I had no idea what was going on." Bentley's formal induction is set for Oct. 1. At age 29, he'll become the youngest member of the Opry's current cast.