Listed in the closing credits of 2001: A Space Odyssey as "Thus spoke Zarathustra" but on the official soundtrack albums as "Thus spake Zarathustra". The book by Nietzsche has been translated both ways and the title of Strauss's music is usually rendered in the original German whenever not discussed in the context of 2001. Although Britannica Online's entry lists the piece as "Thus spoke Zarathustra", music encyclopedias usually use "spake".
