 "Final Fantasy XI Original Soundtrack PLUS" is a two-disc soundtrack album containing mostly previously unreleased music.The music on the first disc was composed by Naoshi Mizuta and comes from the "Wings of the Goddess" expansion, the three add-on scenarios and the "Abyssea" trilogy.The second disc contains the background tracks of the PlayOnline Viewer composed by Noriko Matsueda and Kumi Tanioka of which only two had been previously released as part of the "Memories of Dusk and Dawn" compilation.