A Chord in Time: The Evolution of the Augmented Sixth from Monteverdi to Mahler - Mark Ellis - Google Books

https://books.google.de/books?id=1zQrDwAAQBAJ&pg=PA122&lpg=PA122&dq=%2B%22bach%22+%2B%22Matth%C3%A4us-Passion%22+%2B%22lully%22+

For centuries, the augmented sixth sonority has fascinated composers and intrigued music analysts. Here, Dr Mark Ellis presents a series of musical examples illustrating the 'evolution' of the augmented sixth and the changing contexts in which it can be…