The album's lyrical content largely deals with Sean's history and recent fame, with the focus mainly being on his burgeoning music career. On January 3, 2011, the mixtape was re-released through G.O.O.D. music's official blog. The reissued version included three additional tracks and lacked DJ Don Cannon's voice-overs as well as the bonus track featuring Kanye West.
Prior to releasing his first studio album, tentatively titled Finally Famous, Sean has released three mixtapes to form a "Finally Famous" trilogy. Finally Famous Vol. 3: BIG is notable for its production credits containing many well-established producers including GOOD Music label head Kanye West. Other producers include: Don Cannon, Nick Kage, DJ Spinz, The Olympicks, No I.D., Elised of Treal, Chuck Inglish, Key Wane, Xaphoon Jones, Wrightrax, Clinton Sparks as well as production from Sean himself. Along with its array of producers, the album includes a number of features from other well-known artists, including Mike Posner, Bun B, Drake, Tyga, and others. Kanye West's contributions, along with the inclusion of other established artists and producers earned the mixtape praise from critics. Videos were filmed for the songs "Too Fake", which features the group Chiddy Bang, "What U Doin' (Bullshittin')", "Ambiguous", featuring Mike Posner, "Crazy", "Supa Dupa Lemonade", "Hometown", "Final Hour", "Made", and "High Rise". "Too Fake" features a sample from "Too Fake" by Hockey. "My Closet" features a sample from "Your Song" by Ellie Goulding. "Hometown" features a sample from "Hometown Glory" by Adele.