Google’s cooperation with top100.cn in music search was started in last August, and has then issued the testing version mode. The advertising mode of Google China music search has gone through several changes recently, among which the formerly dominant Flash ads on the bottom of the audition and download pages have been replaced by Google Adsense ads. This arouses some guesswork from professionals within this industry that some brand-name ad manufacturers have stepped away from Google music search services. It was once revealed that Google China was secretly doing a research on a brand-new MP3 search technology, which supports voice search, i.e. users could find the very song just by singing this song out. This new program is Google China’s heavy-weight product of 2009.