50 Cent celebrates his 37th birthday with the release of his free album 5 (Murder by Numbers). The 10-track prequel to his fifth studio LP Street King Immortal features appearances from Kidd Kidd, Hayes, and Brevi, with production by Hit-Boy (“Business Mind”), Harvey Mason, Jr. (“Be My Bitch”), and Mobb Deep’s Havoc (“Definition of Sexy”). Download/stream below.

Download: 50 Cent – 5 (Murder by Numbers)