In 2004 , EWF and Chicago embarked upon a joint national tour , which gave rise to a DVD of a concert that took place at Los Angeles ' Greek Theater entitled '' Chicago & Earth , Wind & Fire – Live at the Greek Theatre . '' This DVD was released on June 28 , 2005 , and was certified Platinum two months afterward . Chicago and EWF once again toured together in 2005 and collaborated for a new recording of Chicago 's ballad " If You Leave Me Now , " that was included on Chicago 's 2005 compilation album '' Love Songs . '' As part of an opening act for the 57th Primetime Emmy Awards held on September 18 , 2005 , at Los Angeles ' Shrine Auditorium , the band once more collaborated with The Black Eyed Peas . This was first time a musical artist had opened at the annual awards show
57th Primetime Emmy Awards
57th Primetime Emmy Awards
Earth, Wind & Fire