This week’s Rhythm Game Track Finder update focuses on three of the biggest names in music video games “Rock Band,” “Guitar Hero” and “Alvin and The Chipmunks.”

Right about now, you may be wondering just how “Alvin” made it onto that list. While “Alvin and The Chipmunks” may not have been the most critically acclaimed game of last year, it does boast one of the most diverse and well-rounded soundtracks in quite some time. Granted, all songs were performed as covers by The Chipmunks, but, if you check out a few of the previews at the game’s official site, you’ll see just how amusing The Ramones and Run D.M.C. sound performed at such a high pitch.

In addition to “The Chipmunks” both “Rock Band” and “Guitar Hero 3″ saw three song updates in the form of downloadable track packs. However, it was announced today that “Rock Band” owners who have a PS2 or Wii will be able to purchase twenty song track backs to supplement the Xbox and PS3’s downloadable content. The “Rock Band Track Pack Volume 1” disks will be available on July 15. Also added were the first 15 (of 25) confirmed tracks for “Guitar Hero: On Tour.”

Check out the full list of updates:
Alvin and The Chipmunks (Wii, PS2) 40 Songs Added
Guitar Hero 3 (Xbox 360, PS3) 3 Songs Added (Muse’s “‘Exo-Politics,” “Stockholm Syndrome,” and “Supermassive Black Hole”)
Guitar Hero: On Tour (DS) 15 Songs Added
Rock Band (Xbox 360, PS3) 3 Songs Added (Angels & Airwave’s “It Hurts,” Yeah Yeah Yeahs “Date With The Night,” and Fall Out Boy’s “This Ain’t A Scene, It’s An Arms Race”)
Rock Band Track Pack Volume 1 (Wii, PS2) 20 Songs Added

As always, go to trackfinder.mtv.com, for all this and more — it’s the definitive search engine for all your music gaming needs.