You do know that only motives are used from toccata and fugue in D minor in the FFVI battle theme. It is also a common technique that composers use to use other's ideas and expand their own creative ideas on top of it. How do you think Bhrams composed his works? He was considered to be the next Beethoven, or better yet, what Beethoven would be if he didn't die, ie one of his works was claimed as 'Beethoven's Tenth'. Do a bit of reasearch before you get unneseccarily angry at people.