View: https://twitter.com/NagamatsuRyo/status/1652991363515047936
You can check his song credits (that include multiple Galaxy 2, Mario Kart 8 and more) at:
Ryo Nagamatsu
Ryo Nagamatsu (born October 25, 1982) () is a video game composer previously employed at Nintendo. He originally joined the company in April 2006 and worked on a variety of games, mostly in the Mario, Mario Kart and 2D The Legend of Zelda franchises, usually been involved with soundtracks with...
nintendo.fandom.com
Pretty big loss for Nintendo, hopefully he'll still work with them as a freelancer.