This group is for those interested in the technical and theoretical aspects of singing barbershop harmony: what makes chords ring (and not ring); what is the role of harmonics, and how do they work; what is Just Intonation; what are the best digital (hardware and or software) tools to support barbershop; how do you submit a tape of that new song if all you have is an mp3 and your section lead is a Luddite; how to learn to woodshed; and any other topics that interest us barbershop geeks!