We could fill the mag many times over on the subject of scales, but, rather than getting bogged down with too much info, we’re looking at just two: the major scale and the natural minor scale. These ...

Tab (Image credit: Future) The F and Gm chords are the key to The Beatles-esque style here. The F chord doesn’t belong in the key (D major), but works well as a passing chord between F#m and Em.