"Why not record the vocals & guitar as well. You could have sent the recording in and stayed home to play with your Hi-Tec toys!"
Because I like playing live.
Because music is a social thing, it needs to have a performer and a listener.
I'm surprised that you need to ask!
I have, of course, recorded the vocals and guitar as well. Those of us who understand all this high-tech stuff call that a CD track.
This was a live performance.
Got it now?
Cheers
Dave