This might just be one of the most versatile structures in harmony. Listen to how it moves down, or to how it moves up. That’s because these three notes are the business end of one of a couple chords.
This isn’t just a B diminished chord, it’s the top of a G7, or the upper extension of an E7 with a flatted 9. Learn it, play it, and share it with someone who belongs in a Beat Kitchen class.