There are songs from OSTs, or even full albums by bands or singers in the anime, that I have never heard in the anime. Some music albums for which this is true:

Why do they do this? For fan service? To make us feel like the bands or singers are real artists? Or to get more profits from CD sales? In which case, couldn't they have just picked the cheaper alternative of selecting some existing songs that are good fits for the anime?

  • I'm having a hard time understanding what you are trying to ask... are you trying to ask why they include certain insert songs, if they're not used in the anime?
    – кяαzєя
    Commented Dec 6, 2013 at 3:29
  • @Krazer song on album, I have some full album OST for some anime, but some of those song didn't appear on anime itself
    – Darjeeling
    Commented Dec 6, 2013 at 3:34

3 Answers 3


The Opening and Ending tracks are normally shorter for anime, as the songs were usually originals developed before the anime and the artist was paid for a portion of it to be used in the anime, not to mention that the songs also need to fit in broadcast time. On the other hand, there are also Opening and Ending tracks which were purposely made for the anime (or the other way around like the case of Black Rock Shooter).

Some songs are even from full albums by the bands or singers in the anime, but they also didn’t appear in the anime either.

These are probably the singles where Opening and Ending tracks come from, like with a lot of ALI PROJECT's album, as I said above, sometimes an artist is paid for just a portion. Of course, there's nothing stopping an artist building an album around that song as well.

Certain BGMs are sometimes actually a number of BGMs from an anime which were split, which is why sometimes there seems to be some songs missing.

There are also Character CDs, which have audio dramas of a character who had an identifiable theme in the anime, plus extra songs. These can normally be identified with the album art focusing on the characters alone.

Then there are Audio Episodes, I haven't heard to many (and I only know of the Code Geass ones). They use some tracks from the anime, but they also use music unique to the audio episode.


It turns out that the song Mata Ashita from Mahou Shoujo Madoka Magica are in episode 1 and 2 on the Bluray version which I don't have. I only have the regular version, so I haven't heard that song in the anime. After doing some research, I discovered that the other songs are also like that. They are used in the extra episode, or Bluray version, etc.


In some franchises they have insert songs which are generally originals which are shortened and can be bought separately. Some like Love Live are based around CD singles and the anime comes afterward.

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