That's the way I've always looked at it. I'm no pro. Not a real player by any means, but I can fall in there and play along with most anybody. Improvise. I play "Simple Man" with a handful of notes and power chords. Whether I'm alone on acoustic or in the mix with a couple more guitars, nobody notices. It works. (Playing like that will get the occasional WTF look, but it doesn't seem to matter) As far as vibrato, it's gotta be really weird for me to even hear it! I just play what I feel and comes to mind at that instant.