Billboard via Reuters had this to say about the bubble burst: The music-game category raked in $1.4 billion in revenue last year, according to Wedbush Morgan Securities analyst Michael Pachter, driven largely by sales of "Rock Band 2" and "Guitar Hero World Tour."

By the time 2009 comes to a close, Pachter expects the category to make half that -- $700 million -- despite such high-profile releases this fall as "The Beatles: Rock Band," "Guitar Hero 5," "DJ Hero" and "Band Hero," not to mention "Guitar Hero: Van Halen," which is due Tuesday (December 22). - read a lot more here