Sega doesn't even hold the rights to recent Sonic's music?

Hello, Sonic Retro! Yesterday, on IRC, I shared some information with some of the people in charge of the Wiki here (specifically Andlabs, who recommended that I bring this to Retro's attention) concerning the actual rights to the music of some of the Sonic games. There's so much I want to go over I don't know where to start, so I apologize if the paragraph is a little sloppy.

First off, there is a Japanese copyright collection society called the "Japanese Society for Rights of Authors, Composers and Publishers" (JASRAC, for short), that documents and protects copyright work for Japanese music artists. They have a huge database of Japanese music copyrights which span to music CDs, records, movie soundtracks, Anime soundtracks, and even game music.

Out of curiosity, using a Japanese search engine they have here, I entered "Sonic Adventure" in the Title (作品タイトル) category, and it brought up dozens of results. As you can see, in the Author (著作者) and Artist (アーティスト) categories, Sega is not shown in any of them. Also out of curiosity, I clicked a few records on the database (specifically under "ＪＵＮ　ＳＥＮＯＵＥ" and "ＦＵＭＩＥ　ＫＵＭＡＴＡＮＩ" as artists, for example).

Under the column, "Right Holder (or 権利者)" of each record online, lists the right-holder(s) to the work. In most records listed for each individual work, Sega Enterprises (or what would be in its official Japanese Katakana: セガ or セガ・エンタープライゼス) is not among the right-holders to the songs.

Allow me to make a few examples here (Please note that I am NOT going to list every single one of each individual's works, I have time for other stuff).

EDITED: 8/30/2010 11:26PM PST

Under Fumie Kamatani's name:

Now here's a list of some of Jun Senoue's works:

Even more noticeable are the records of songs under Kenichi Tokoi's name.

And from Naofumi Hataya, we have here:

Upon closer examination, I have discovered that, so far, according to the song records in the database, Sega does not actually hold the rights to most of the game music for post-Sonic Adventure games, including Sonic Adventure 2, Sonic Heroes, Shadow the Hedgehog, and perhaps beyond. The people who actually made the music work, however, do. At least, under the Wave Master label.

Before you ask, you're probably wondering "Isn't Wave Master part of Sega or something?" Well... yes and no. From what I've researched, Sega doesn't actually own Wave Master. WM serves as a music publisher and producer for Sega's music. They are pretty independent of them.

One more note here: I am still investigating the JASRAC search engine, so I will be updating this list periodically for any new information about the Japanese copyrights to Sonic music. Please stay tune!


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Now I have a couple questions to ask of Sonic Retro.

• Does the phrase "ＡＦＴＥＲ　ＴＨＥ　ＡＤＶＥＮＴＵＲＥ" mean anything at all? It also references a "ＳＯＮＩＣ ＡＤＶＥＮＴＵＲＥ ＆ＮＩＧＨＴＳよりＡＦＴＥＲ" in that same record. I definitely know what Sonic Adventure and NiGHTS are, but the exact meaning of "ＳＯＮＩＣ ＡＤＶＥＮＴＵＲＥ ＆ＮＩＧＨＴＳよりＡＦＴＥＲ" is unknown to me. A search on Google, YouTube, and Sonic Retro Wiki does not bring up any results. Could this actually be a track name to some unknown track produced for Sonic Adventure?
  What I researched about this record, is that the names associated to "ＡＦＴＥＲ ＴＨＥ ＡＤＶＥＮＴＵＲＥ" are Tomoko Sasaki (佐々木　朋子), Jun Senoue (瀬上　純), Can't translate (瀬津丸　勝), Sega Enterprises, and Wave Master. I, for one, did not know that Tomoko did any music for Sonic Adventure. She is listed as Special Thanks in the games credits.

• This doesn't concern JASRAC, but speaking of Tomoko Sasaki, she is known to have been voiced the Chao characters in Sonic Adventure 2, and presumably Sonic Adventure. Giving her track record of recording speech in some of the games she has worked on, could she have actually recorded the PCM speech samples for Sonic The Hedgehog CD? In that game's credits, she is credited as Special Thanks, which is also the first game she's been credited on. I ask this because I notice some of the PCM voice samples from SCD sound vaguely similar to the Chao in SA1 & SA2, at least to my ears.

This topic will be updated as you read this so please look forward to any new findings here, thanks.