Karaoke One offers you a feature rich Karaoke experience from your Windows 8 device with access to thousands of songs. Karaoke One is also available as a Windows Phone app for those times your karaoke needs are more mobile oriented.
Karaoke One is a freemium app in the Windows Store and through the myAppFree campaign you can pick up the Pop Right Now Volume 1 playlist with over a dozen songs(a $2.99 value) free over the next twenty-four hours. Other playlists are available for in-app purchase at a discount. Also, being a universal app, this will also give you access to the Windows Phone version and the Pop Right Now playlist for free.