Most guitarists spend their entire musical life soloing out of just one or two scale patterns, typically at the 5th and 12th frets, depending on whether they’re playing in the key of A or E.There are only seven different scale patterns that cover the entire neck of the guitar in any key. Learning them all is not only easy, it’s mandatory for anyone who wants to develop into more than your typical hack lead guitarist.
Once you know the seven patterns, all you have to do is slide them up and down the neck to play in any other key. Remember that if you slide one of the patterns up two frets, you must slide all of the patterns in that key up two frets – they work together.
And even better, when you learn the seven patterns in one key, you’ve actually learned two keys – one major and one minor – because of the theory of relative majors and minors