What's AFTER the chord?
If it's some kind of D chord, then G,B,C#,F# could be A13, a extended version of A7. B would be the 9th and would appear in A13. The 11th (D or D#) can be omitted, as it is in this chord. The root of the chord G, B, C#, F# would be an A in the bass part.


Jim Williams
Indianapolis Brass Choir
N9EJR