AniDB

http://www.imdb.com/title/tt0193688/ .

I know there to be French fansubs, but there may be more. It's mostly instrumental.

Has this been added before and hence deleted (perhaps for not being japanese enough?), or can I go ahead and add it?

Well IMDb clearly says "Country: USA, Language: English"... so you should NOT add it.

See http://wiki.anidb.net/w/AniDB_Definition:Anime