I was wondering what the category was about? Does it mean to just play a random song? Cause if it's like that, then it's not really a speedrun, there is no way to go fast. Also it doesn't really make sense to only allow actual Arcade machines. This makes it impossible for anyone that isn't in Japan to try this, given that's the only place there are Arcade machines for it.

Basically, I think there is no actual way of speedrunning this game, and it's almost inaccesible for most people, so it doesn't make sense for it to have a leaderboard here in my opinion.