I can play "Pictures at an Exhibition!"

I learned how to play this by my dad. He said, "G-F-A sharp-C-F-D-C-F-D-A sharp-C-G-F." And for the last part, he told me, "C-D-E (in slow motion and then a little faster) C-E-D-G." I wanted to learn how to play this because I wanted to play the whole "Cathedral Pictures" from Animusic 2. But I just know the end and the beginning. Please watch this movie now! "Cathedral Pictures" sounds just like "Pictures at an Exhibition."