There are a lot of different styles of guitar playing, and the skill needed to play most of them is unique from the others; e.g. standard guitar, or guitar guitar, uses regular tonic scales and scads of odd finger movements like slides, bends, picks, scrapes, hammer-ons, pull-offs, barre chords, and harmonics, to name a bunch. For that matter, there are over 1100 different named chords that can be played.

Blues guitar, similar to Jazz guitar, uses a special 'blues scale'. E-G-A-B-D-E-G-A-B-D-E-G is the note sequence for the blues base notes; most tunes use only these notes and maybe a semitone bend or two.

Classical guitar is very much like guitar guitar, except that the stringency is such that the student is required to make each note sound perfectly, whereas in normal guitar errors can be masked very easily. When this skill is carried back to other types of play, the result is usually phenomenal.