When I’m playing licks I like how do I know what scale and key it is coming from when a lot of times those licks do not start on the root note. For example- the supernatural by Gary Moore. I love the song and know how to play it but my assumption is always a pentatonic scale in the key of the 6th string root on whatever fret my first finger starts the licks on. (Basically how can I find the scale without starting of a root or 6th string root?)