"Only in Dreams" by Weezer is a terrific song, until about 52 seconds into it when the vocals come in. Unfortunately acoustic versions only seem to exist as low quality YouTube videos. However, the good news is that there's some free software called Wavosaur that will take an mp3 and do the required filtering. It's not perfect - some bass is lost and muted voices can still be heard, but at least karaoke fans can now rejoice!

music, mp3