Campbell's hits include John Hartford's "Gentle on My Mind", Jimmy Webb's "By the Time I Get to Phoenix" and "Wichita Lineman", Allen Toussaint's "Southern Nights" and Larry Weiss's "Rhinestone Cowboy". Campbell made history by winning a Grammy in both country and pop categories in 1967: "Gentle on My Mind" snatched the country honors, and "By the Time I Get to Phoenix" won in pop. He owns trophies for Male Vocalist of the Year from both the CMA and the ACM, and took the CMA's top honor as Entertainer of the Year.
During his 50 years in show business, Campbell has released more than 70 albums. He has sold 45 million records and racked up 12 RIAA Gold albums, 4 Platinum albums and 1 Double-Platinum album. Of his 75 trips up the charts, 27 landed in the Top 10. Campbell was hand-picked by actor John Wayne to play alongside him in the 1969 film True Grit, which gave Campbell a Golden Globe nomination for Most Promising Newcomer, and gave Wayne his only Academy Award. Campbell sang and had a hit with the title song (by the same name) which was nominated for an Academy Award. He performed it live at that year's Academy Awards Show.
In 2005, Campbell was inducted into the Country Music Hall of Fame.