Released together with a book containing lyrics, biography, interviews and discography of Einstürzende Neubauten.
Track 1 unavailable anywhere else. Track 2 is listed as "Wüste (Ballet Version)", but this includes "Batman brät Fische ("Instrumental Version" by FM Einheit which appears in a version with vocal-recording on his "Stein" album).
"Nag Nag Nag / Wüste (Ballet Version)" was released by Stampa Alternativa in 1993.
Get it here : Einstürzende Neubauten - Nag Nag Nag / Wüste (Ballet Version)