So since I'm obsessed with IR#FE (no, I'm not calling it SMTxFE anymore, I refuse) I decided to drudge up more info on it based on the trailer.
At the end of the E3 trailer, there's a logo at the bottom right that says Avex Group, so I decided to look them up. I found this on their Wikipedia page:
"With leading producer's Tetsuya Komuro's assistance, Avex became Japan's leading dance record company during the 1990s, and continues producing and recording some of Japan's most famous pop singers such as Japan's highest selling solo musician, Ayumi Hamasaki. The company also provides theme music soundtracks to many anime and a few video games through its subsidiary Avex Mode.
Avex Group is mainly known in Japan because of its flagship music imprint, Avex Trax, which was founded in 1990. It is one of the top three record labels in Japan since the Komuro period,[3] and is currently the biggest (14.7% of all recorded music sales as of first half 2013), ahead of Sony Music Entertainment Japan (13.0%), Universal Music Japan (9.9%), King Records (7.4%) and J Storm (5.9%)."
Basically, they're a big deal. And Nintendo has gotten them to compose this game's soundtrack. Based on the few tracks we've heard so far, I'm both impressed and anxious to hear the rest.
BUT THAT'S NOT ALL. Another logo in the video showed that CyDesignation is doing the mirage designs, which is apparently a studio that produces designs for video games. Notable games they've been apart of include Sword Art Online, Final Fantasy XIII: Lightning Returns and Grand Blue Fantasy:
Here are the mirage designs we've seen so far for reference:
