The Lost Tape is a mixtape by American hip hop recording artist 50 Cent. The mixtape, hosted by DJ Drama, is 50 Cent's first "Gangsta Grillz" mixtape. It was released as a free download on May 22, 2012.

The Lost Tape, released as promotion for his fifth studio album Street King Immortal (2013), includes guest appearances from Snoop Dogg, Eminem, Jeremih, 2 Chainz, Hayes, Robbie Nova, Ned the Wino, along with newly signed G-Unit artists Kidd Kidd and Precious Paris. It was produced by 45 Music, Tone Mason, AraabMuzik, DJ Spinz, Mike Will, G Sparkz, Chris N Teeb, 8track, Kon Hathaway, Slimm Gemm, Illmind, Swiff D, Dready and Jake One

The first music video, was for "Riot (Remix)", a remix to a 2 Chainz song. The second video was released on May 25. "Murder One" (or "Shady Murder SK Energy Drink #9"), with Eminem's intro, shot on the same location as "Riot Remix". On June 5, "Get Busy" was released on his YouTube account. On June 8, the "All His Love" video was released. The "O.J." video was released on June 11. The official video for "Double Up" was released on June 19 and features Floyd Mayweather's Money Team member Hayes. On June 25, the video for "Complicated", a remastered version of "SK Energy Track #8", was released. The video for "I Ain't Gonna Lie" was released on July 2, 2012.

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