Yes, it's time to get nostalgic with a great chord and scale. The Lydian scale is a mode of the major scale. If you're not familiar with modes you can learn more in my "Modes of the Major Scale" lesson. Lydian is the fourth mode, which means you start from the 4th degree of a major scale. A G Lydian scale is the 4th mode of a D major scale. So if we play a D major scale but start from G, then we get:
G · A · B · C# · D · E · F#
If we construct its characteristic chord by taking the 1st, 3rd, 5th, 7th scale degrees, we get G Major 7
GMaj7: G · B · D · F#
However, if we include the Lydian scale's most characteristic note - the C# - on top, then we get GMaj7#11
GMaj7#11: G · B · D · F# · C#
What does this mean? This means that a G lydian scale will sound great over a GMaj7#11. But, don't take my word for it. Just play the example below.
