What comes after "middle C" on piano?

Ok, I am trying to play This is Halloween on piano.

And I need to know how to work out what notes come after the middle C… I dont get it…

so it goes:
-F-
E
-D-
C
-B-
A
-G-
F
-E-
D
--------Middle C
What comes here?!

Im CONFUSED!!!

thanks for you help