There are at least 2 very different versions, but no idea what games they are from
version 1 that we got in 2008 has: drums, guitar, rhythm, song
song contains the vocals and a few other things, like the shutter sample, that prevents it from being a perfect instrumental, not to mention that the drum track is weirdly mixed anyway.
version 2 from 2011 or so has: kick, snare, cymbals, bass, guitar, vocals, extras.
the vocals are clean in this one, but the background vocals are in the extras track.
I don't understand why the first version is listed since the 2nd one is so much better. At least my version doesn't have the instrumental track you are talking about. It seems to me that someone just added this and it wasn't originally there.
I also have a version of Given Up that is not listed here. Similar to OSC, one from 2008 with 5 tracks and from 2011 with 4 tracks