In late 2012, Hammer appeared with Psy at the 40th American Music Awards and during "Dick Clark's New Year's Rockin' Eve with Ryan Seacrest" performing a mashup of "Gangnam Style" and "2 Legit 2 Quit" together, which was released on iTunes. Hammer released "Raider Nation (Oakland Raiders Anthem)" along with a video in late 2013 and "All In My Mind" (which samples "Summer Breeze" by The Isley Brothers) in early 2014 with his newly formed group called Oakland Fight Club featuring Mistah F.A.B.