The G Major scale has one sharp in it. F#.
The notes in the G Major scale are:
G – A – B – C – D – E – F#
If you are unfamiliar with the basics of major scales, be sure to read the posts what is a major scale and major scale positions on the fretboard.
If you are interested in learning about modes and guitar scales, it should be pointed out that the G major scale is effectively the same scale as the G ionian scale. For the purpose of the series of lessons on guitar modes, we are going to treat G ionian and G major as an identical scale.
Positions On The Guitar:
Let’s look at playing the G major scale in the open position.
Here of course, are the other positions across the fretboard:
The first one is in the 2nd position (the lowest fret is fret 2)
The next one is in the 3rd position (the lowest fret is fret 3)
The next one is in the 7th position (the lowest fret is fret 7)
The next one is in the 8th position (the lowest fret is fret 8)
The last one is in the 11th position (the lowest fret is fret 11)
And there you have it. All the major scale positions for G along the fretboard.
For more information on major scales check out the post a complete guide to major scales on the guitar.
Also check out the post, guitar modes explained.
Here are the 7 modes in the key of G Major: