During the summer of 1997, Smith also began his solo music career with the release of "Men in Black", the theme song for the film, which topped singles charts in several regions across the world, including the UK. "Men in Black" (and second single "Just Cruisin'") was later included on Smith's debut solo album "Big Willie Style", which reached the top ten of the US "Billboard" 200 and was certified nine times platinum by the Recording Industry Association of America (RIAA). The third single from the album, "Gettin' Jiggy wit It", became Smith's first "Billboard" Hot 100 number one when it was released in 1998.