Sonic Youth

"Sonic Youth" is an upcoming song by Crush 40. It is not in any Sonic game, but it is tied to the Sonic franchise. The song heavily references songs they've made in the past such as, Open Your Heart, Live and Learn, His World, and Sonic Boom. It will be performed by Crush 40 live in Tokyo. It was also confirmed that there will be a iTunes release of the song sometime this year.

Links
http://www.youtube.com/watch?v=brSzyLtNjgw