The intro theme to Sonic Colours--- "Reach for the Stars" -- gone acapella. This is a work in progress too; I am thinking of making an acapella medley of themes from the Sonic series, including Sonic Boom, His World and Endless Possibilities.
I did this on a complete whim, and if you see my news feed, you'll see the original version of this cover.
Integrated mic on Audacity. All vocals are mine (yep, I've even hit my lowest note on this song, it's B2).