From Apocalyptica's Wikipedia Page:
"Apocalyptica are currently working on their sixth studio album, Worlds Collide, which is due for worldwide release on September 17, 2007. Till Lindemann of Rammstein will be among the guest singers. He will be taking on David Bowie's song "Heroes", which was also released in German as "Helden". Till will be singing the German version, making his song the only German-language song on Worlds Colide and the secound in the bands history."
Till singing with Apocalyptica. OMGWTFSPLOSION