Anison

Anison (アニソン; or "Anisong") is short for Anime song, but is also used generally to refer to all anime music with a focus on opening and ending theme songs. By some definitions anime songs include songs in anime-style video games.

Theme music composed for films, anime, tokusatsu, and Japanese television dramas are considered a separate music genre. While musicians and bands from all genres of Japanese popular music have recorded songs and scores for Japanese television and film, there are several prominent musical artists and groups who have spent most of their musical careers performing theme songs and composing soundtracks for visual media.