Bachipedia – a project of the J.S. Bach Foundation
The J.S. Bach Foundation is performing the entire vocal oeuvre of Johann Sebastian Bach in an ambitious concert cycle lasting around 25 years. The first concert took place in 2006, and since then, all introductory workshops, concerts and reflective lectures have been recorded on video. Over the years, we have amassed an extensive collection of audio and film material as well as other content related to the master’s works. One of the Foundation’s aims is to raise the profile of Bach’s vocal oeuvre – especially among the young. To this end, the Foundation established the “Bachipedia” platform. Learn more about the project.
In these quick explainers, our conductor Ruedi Lutz gets straight to the heart of a variety of musical concepts. Clear, concise, entertaining. Simply “Ruedi to go”!
Diminished seventh chord
What is a diminished seventh chord? In this video, Ruedi is given three minutes to teach Konrad the basics. He shows Konrad how to build the chord as a series of minor-third intervals: F sharp, A, C, and E flat – “or is that a D sharp?” asks Konrad. That’s the problem, explains Ruedi. When the diminished seventh note is treated as an E flat, it resolves downwards in the chordal progression, when treated at as a D sharp, it resolves upwards. That’s what makes the chord so enigmatic – something of a wolf in sheep’s clothing, they decide.