I love The Oak Ridge Boys.  In 1978, their "I'll Be True to You" became their first #1 Billboard charts country single.
Singing "Much Too Young (To Feel This Damn Old)", Garth Brooks made his Grand Ole Opry debut in 1989.
In 2000 at the Little White Wedding Chapel in Las Vegas, Dixie Chicks' Natalie Maines and Adrian Pasdar were married.  After the ceremony they hit the casinos and won $740.
"Wide Open" earned gold album status for Jason Aldean in 2009.
Glen Campbell played the Hollywood Bowl as part of his final tour in 2012.  Campbell sang many of his hits including "Galveston" and "Wichita Lineman".