Wii U’s killer app in Japan might be Wii Karaoke U. Nintendo partnered with Joysound to turn living rooms into karaoke boxes. Wii Karaoke U has over 10,000 songs available on a subscription basis.

Sing Party, one of the Wii U launch titles, has an odd mix of oldies and “Call Me Maybe.” Japan clearly has the superior karaoke program since Wii Karaoke U gives players access to over 90,000 songs.