sentences:  Additionally, several journalists noted the band's vocals were unmistakably that of Armstrong.In a 2013 interview, bassist Mike Dirnt finally revealed that the group was in fact Green Day, mentioning that "Money Money 2020" was worked upon alongside other Green Day projects in the mid-00's.During the first week of December 2007, a MySpace profile appeared featuring a band whose lead singer's voice "unmistakably" belonged to Green Day frontman Billie Joe Armstrong.