Final Fantasy X, aka FFX is a hip-hop artist.
If you're listening to the video game soundtrack you may find the correct artists and track listing on this webpage: http://vgmdb.net/album/8
Please do yourself (and last.fm) a favor and fix your tags.
Composer: Nobuo Uematsu Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.