Synonymous with Bay Area rap, E-40 built a devoted regional following prior to gaining national exposure with flamboyant rhymes peppered by slang inventive and extensive enough to warrant a lexicon. Throughout his career, E-40's entrepreneurial spirit has cultivated a flourishing scene in communities such as Oakland and his native Vallejo. Among the first Bay Area rappers to sign to a major label, E-40 went platinum with his first release for Jive, In a Major Way (1995). Through the 2000s, he added to his major-label discography with albums that regularly debuted within the Top Ten of the R&B/hip-hop chart, highlighted by Tha Hall of Game (1996), The Element of Surprise (1998), and My Ghetto Report Card (2006), all three of which went gold. Each release proved highly influential, not only on the West Coast but also in the South. Concurrently, the Bay Area rap scene, invigorated by the hyphy sound it cultivated, grew in popularity. It had no bigger champion than E-40, who continued to crank out multiple full-length projects on an annual basis throughout the 2010s, a decade in which album series such Revenue Retrievin' (2010-2011), The Block Brochure (2012-2013), and The D-Boy Diary (2016) expanded into six volumes. The breadth of the tracks on which he is featured, including Lil Jon's platinum "Snap Yo Fingers" (2006) and Big Sean's multi-platinum "I Don't Fuck with You" (2014), is another representation of the esteem in which he is held.
Born Earl Stevens on November 15, 1967, in Vallejo, California, E-40 made his rap debut in 1990 on Let's Side, an EP by the Click. The EP was co-produced by Mike Mosley and Al Eaton. In 1993, E-40 made his solo album debut, Federal, a nine-track LP/14-track CD produced by Studio Ton and released by Sick wid' It in association with SMG (Solar Music Group), a regional distributor. In 1994, on the strength of the regionally popular, independently released single "Captain Save a Hoe" (aka "Captain Save 'Em Thoe") from the six-track Mail Man EP, E-40 signed a recording contract with Jive Records, the home of Bay Area pioneer Too Short since 1987. Jive re-released "Captain Save a Hoe" on 12" and also re-released the Mail Man EP, adding two bonus tracks; all the songs on the EP, including "Captain Save a Hoe," were produced by Studio Ton, except one of the bonus tracks, "Ballin' Out of Control," which was produced by Mike Mosley and Sam Bostic.
E-40's ties to the South became most clear in 2006, after the expiration of his contract with Jive, when he partnered with Lil Jon and his BME Recordings label for My Ghetto Report Card, released in association with Warner Bros. The album — featuring production from Lil Jon as well as Bay Area beatmakers Droop-E, Rick Rock, Studio Ton, and Bosko — was E-40's most successful in years, and it marked his return to the Billboard Hot 100 with a pair of impressively charting singles: "Tell Me When to Go," featuring Keak da Sneak (number 35), and "U and Dat," featuring T-Pain (number 13). That year, he also appeared on Lil Jon's platinum hit "Snap Yo Fingers." His 2008 effort The Ball Street Journal featured the Lil Jon production "Break Ya Ankles" as its lead single, followed by the Akon feature "Wake It Up."
Two years later, E-40 returned with the Revenue Retrievin' project, a double album split into two separate releases. The Day Shift version featured the more street-oriented cuts, while the Night Shift version was filled with club tracks. The project turned into a quadrilogy in 2011 with the simultaneous release of his 13th (the varied Revenue Retrievin': Overtime Shift) and 14th (the very dark Revenue Retrievin': Graveyard Shift) albums. A year later, he returned with another batch of releases, this time divided into three single discs titled The Block Brochure: Welcome to the Soil, Pt. 1, 2, and 3. The year 2014 saw the launch of a four-part album as Sharp on All 4 Corners: Corner 1 and Corner 2 landed. Sharp on All 4 Corners: Corner 3 and Corner 4 were scheduled for 2015 but were preceded the following year by "books" one and two of The D-Boy Diary. Meanwhile, E-40's status as a venerable Bay Area fixture was sustained with appearances on hits by Big Sean (the multi-platinum "I Don't Fuck with You"), Ty Dolla $ign ("Saved"), and Yo Gotti ("Law").