The popularity of country music exploded in the early 1990s. The stage had been set in 1989 with the debuts of several performers who proved to be profoundly influential on the genre during the 1990s and beyond. Most notable of that group was Garth Brooks, who shattered records for album sales and concert attendance throughout the decade. The RIAA has certified his recordings at a combined (128× platinum), denoting roughly 113 million U.S. shipments. Brooks recorded primarily in a honky-tonk style, although he frequently combined elements of soft rock and arena rock in his songs. His songs sometimes explored social themes, such as domestic violence (in "The Thunder Rolls") and racial harmony ("We Shall Be Free)", while others – such as "Friends in Low Places" — were just good-time songs with traditional country themes of heartbreak, loneliness and dealing with those emotions.