Remember how near the end of the Nintendo Switch Event in January, we were shown a sizzle reel showing multiple titles for the system. During it, there was this original song, and it can't be found online without sound effects. However, a sound effect-less version does exist.
When Nintendo Co. LTD broadcasted their own live stream from Japan on YouTube, the song played with no sound effects. The problem is, the stream was privated. And I can't find the stream anywhere on the internet. If anyone downloaded any of the Japanese streams, let me know.