To start things off, you may find a lot of relevant "vocal removal" posts in the
Vogone Help Forum.
Vogone Easy is like Vogone's Preset #4, only sounding better!
Yes, better because all the audio processing is bypassed for the cleanest vocal removed backing track for any given song.
When you have a difficult song, or Vogone Easy is removing too many instruments, you can
upgrade your Vogone Easy to Vogone.