Main Page | See live article | Alphabetical index OST stands for Original SoundTrack. The term can be used to describe the musical soundtrack sold for any movie or TV series, but the phrase "OST" is more often used when describing soundtracks from anime. Common purveyors of anime OSTs in the United States include ADV Music, AnimeTrax, Pioneer Entertainment (now Geneon) and Bandai. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.