In June 2005, M.O.P. officially announced their signing with 50 Cent's G-Unit Records, around the same time as Queens rap duo Mobb Deep. 50 Cent is a big fan of the group, and has stated his plans to gain the group more mainstream success. The duo completed a song with 50 Cent which was featured on the "Get Rich or Die Tryin"' soundtrack entitled "When Death Becomes You", and also contributed their rap vocals in a remix of "I'll Whip Ya Head Boy". Months after the signing, M.O.P. released a compilation album entitled "M.O.P. Salutes the St. Marxmen", consisting of several tracks recorded while the group was signed to Roc-A-Fella. In July 2006, M.O.P released the long-shelved "Ghetto Warfare".