It's me, Yuuyatails, the admin of the Taiko no Tatsujin Wiki.
I think I need to explain about it. The reason behind the additions of 'Original artist' in the song list is to prevents song/music naming confusion because there are some songs that have the same name.
Most songs and music features in Taiko no Tatsujin games (except Namco Original) are covers, and are mostly made by unknown artists. However, some have the same name as the other by other music artist, and this create a very big problem as you might accidentally take the wrong information and write them onto some articles here in Taiko Wiki.
Original artist refers to the music artist, singer, or composer who made the original version of the song/music. Anime genre songs are no exception, but some users might not know where's the song(s) come from. So, I add the 'Note(s)' in the song list as the precaution measure. The 'Note(s)' refers to where the song was featured, for example TV drama, TV anime, video game etc.
Here's the example for a song list. I will take the song 'Cha-La Head-Cha-La' as the example here:
|Cha-La Head-Cha-La||Hironobu Kageyama||
First opening theme song for TV anime series Dragon Ball Z
Since 'Cha-La Head-Cha-La' is, most of the time, a Anime genre song, all Taiko no Tatsujin games, instead of showing the artist's name, it shows where the song was featured. In this song's case, the games usually shows the word 'From "Dragon Ball Z"' or something similar.
(Ironicly, in some Taiko no Tatsujin games, the original version of the song sing by Kageyama was used.)
However, some songs have long subtitles in their name, so the game developers have no choice but to scraps the artist's name or work's name all together.
Hopefully this will clear up some confusion about the song lists' structure.