The G major scale starts and ends on the note G and contains an F sharp (F#) note. The following example illustrates two octaves of the G major scale. Notice that the G major scale has the same patterns of tones and semitones as the C major scale. In a major scale the interval between the 3rd to 4th note and the 7th to 8th notes is a semitone (1 fret). In the G major scale, to keep this pattern of tones and semitones correct, an F# note must be used instead of an F note.
Note: Sometimes scales and single note melodies are played using the right hand fingers on the bass strings as well as the treble strings. Try the following G major scale using alternate m and i fingers.