That's not an essential component of Karaoke though. I live in Japan where Karaoke is extremely popular, and in the more higher-end karaoke systems, you can pic

That's not an essential component of Karaoke though. I live in Japan where Karaoke is extremely popular, and in the more higher-end karaoke systems, you can pick the original music for popular songs (or sometimes you can even pick live performances with the video of the artist on stage and everything)