The top three notes give us the b9th (Eb), the 3rd (F#) and the 13th (B). This Gmaj9 gives a nice finishing chord, meaning ...

The most memorable guitar solos ... is one of the four chord tones or that chord: Eb, G, Bb, D (see Figures 2 and 3). Here’s a rundown of the progression: G - Ebmaj7 - F# - C# - Cdim - Bbm ...