This week’s E3 show in Los Angeles is showcasing some of the latest music games, including efforts from veterans Harmonix and Ubisoft. Harmonix unveiled an Xbox One game called Dance Central Spotlight yesterday, which will use the more-accurate motion sensing abilities of Microsoft’s latest Kinect controller. 10 songs will be included in the game, with 50 available to download at launch. New songs will be added rapidly: “If we can get them a song while it’s still charting, that’s very fun for the fans. They’re much more likely to buy it if it’s still on their minds,” project director Matt Nordhaus told VentureBeat. Meanwhile, Ubisoft showed off Just Dance Now, a new mobile version of its Just Dance games. “The cool feature is you can have 20,000 people playing at the same time, in real-time, all scoring together. And this is in a light app that uses very little data,” said executive producer Jason Altman. The app and some songs will be free, with in-app purchases paying for more.