It's interesting, the 5 songs and the update are installed through... a USB port. It takes the same amount of time for the arcade itself to boot up! There's also a rare glimpse into the inner workings and menus of the arcade where stuff like number of coins, songs and input/output testing of the drums are. If you've seen these menus before (caught the technician coming in at the same time), that's because they've looked exactly the same since Taiko 7!
Note: 0:18 to 1:44 is just a black screen, probably waiting for the machine to configure itself after the update.
