“One of the things I remember from working with [Shigeru] Miyamoto and everyone at Nintendo is how musically inclined they all were. Sometimes Miyamoto would sit behind us and strum a guitar for example. At that time I was into synths and had a Yamaha QY10 handheld sequencer/synth and would knock up little ditties and fun stuff like that. I feel that making games and music are entwined.” - Dylan Cuthbert

I think games like Rhythm Heaven really show just how tied into music Nintendo is. Having a good ear can be a hard thing to come by, but it's clear that many Nintendo employees possess that trait.