KTL is a musical duo consisting of Stephen O'Malley (Sunn O)))) and Peter Rehberg (Pita), originally formed to create the music for a theatre production entitled Kindertotenlieder by Gisèle Vienne and Dennis Cooper. The production premiered in Brest, France in March 2007. The duo have also played shows not associated with the Kindertotenlieder production. In late 2008 it was announced on Stephen O'Malley's website that KTL's fourth album would be released January 2009 through Editions Mego and February 2009 through Daymare Records with a vinyl release on Inoxia. In addition to the announcement two song titles were mentioned for the upcoming album, "Paratrooper" and "Natural Trouble".