Disney Sing It! - High School Musical 3: Senior Year is a karaoke video game and sequel to High School Musical: Sing It!. It was released on November 28, 2008 across multiple platforms, within Europe and on February 17, 2009 in North America.
Unlike High School Musical: Sing It! which contained animations for the musical numbers, this game is set out exactly like a SingStar game however instead of music videos, they used the actual musical sequence from the film.
It was released in North America on February 17, 2009, coinciding with the DVD and Blu-ray Disc releases of the film. The North American version included an additional 2 songs from High School Musical 2, and 3 songs from High School Musical 3, giving the entire High School Musical 3 songlist.
Disney Sing It: High School Musical 3: Senior Year for the Xbox 360 allows use of the wireless Microsoft Lips microphones. Similarly the Playstation 3 version allows the use of the SingStar wireless microphones.
Source: Wikipedia, "Disney Sing It! – High School Musical 3: Senior Year," available under the CC-BY-SA License.