 "Nothing But a Heartache", a cover of the original single by the Flirtations, was released as a digital download single on iTunes on 18 June 2007.Beyoncé's manager approached English production team Freemasons to remix "Déjà Vu" after hearing a remix they made for a song by singer Heather Headley.A club-oriented version was produced and appeared on a "Green Light" Freemasons EP, released on 31 July 2007.