I am working through a figured bass exercise in the "Ninth, Eleventh and Thirteenth Chords" chapter of Piston's Harmony.
The first bar of the figured bass is given as: What is the chord represented by the G# in this figured bass? My usual approach is to assume that if I don't recognise something, it means it is likely to be one of the new types of chord introduced by the chapter I'm working through. This would mean a 9th, 11th or 13th chord of some sort. However, in this instance, none of those seem to fit.