sentences:  He also formed side project The Go-Go Darkness as a duo with his wife, Elsa María Blöndal, and issued the "Dark Heart" album in 2009.Singapore Sling's fourth album, "Perversity, Desperation and Death", was released in 2009 by 8mm Muzik.This was followed by the band's fifth, "Singapore Sling Must Be Destroyed", in October 2010, issued by Outlier Records.