How can I learn thoroughbass?
I've done some reading and I've discovered that our modern system of music theory (I'm looking at you Roman numeral analysis) is not the same system that most of the great composers, including the "Big Three": Mozart, Bach, and Beethoven used. Apparently, they favored the system of thoroughbass; Bach himself was supposedly against Rameau's theory of harmony, from which our modern system is derived.
I did a little more digging and I managed to find some good texts that I would like to study, however, there are just so many to choose from. It seems that thoroughbass was broken down into two different goals, writing down a realization (taking as much time as necessary to do this), and realizing a figured bass extemporaneously at a keyboard, as if sight reading.
My question is this: Which books on thoroughbass would be best to start with as a beginner?
It seems to me that the C.P.E Bach essay, as well as J.S. Bach's precepts and principles, are well known, but are a little difficult. There's also the Albrechtsberger book and a book that seems to be written by Mozart on the subject, though I don't know if the claim of Mozart's authorship is reliable.
Ultimately, I would like to be able to look at a figured bass and be able to provide a realization, either written down or extemporized, in any key.
Any help on this subject would be greatly appreciated. Thank you so much!
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For myself and others a list of terms...
figured bass: a system to represent chords, synonymous with 'thorough bass'
basso continuo : executing a figured bass
partimenti : figured bass exercises to teach students harmony and practice basso continuo performance
The Art of Partimento: History, Theory, and Practice by Giorgio Sanguinetti
This isn't a collection of partmenti, but rather a text about the method and its history. Lots of musical illustrations, but not really a book from which to practice.
The Langloz Manuscript: Fugal Improvisation through Figured Bass by William Renwick (Author)
This may not have a lot of immediate practical value, but it's very interesting to read about how partimenti and figured bass as the foundation for the master skill of fugue improvization.
As someone who is currently learning to play from figured bass on the harpsichord, I can recommend starting with the book "Continuo Playing According to Handel: His figured bass exercises" edited and with commentary by David Ledbetter.
The exercises start with just root position chords for the first exercise and mostly add one new concept with each exercise. While the exercises (basses) are by Handel, the commentary, guidance and sample realizations are by the editor. He gives guidance on realizing the basses in the standard 1+3 style (1 "voice" in the LH, 3 in the RH). This is a good place to start, but be aware that it doesn't stop there – skilled harpsichordists will often use more voices, as well as having more than one voice in the LH.
One thing that I feel would have been useful to add to the book is transposed versions of the exercises (particularly the early ones) to build fluency in different keys. However, you can make these yourself either with software or by writing them out by hand.
It may be helpful to know that the editor has a page of corrections and additions to the book: davidledbetter-music.com/?page_id=18
Thanks to you I have found this link: www.musik-akademie.ch/dam/jcr:da28dd16-cec4-4f03-8b6c-56c4236bfe9f/Compendium_Generalbass_nur_Text_ohne_Audio.pdf
It's in German and translated to English. So it will be very fine to me - as I'm here to make an course in English. If you want to learn German too it will be interesting to you too.
As I've had the experience that certain courses are quite theoretical, abstract and not very musically I would prefer in general to study the figured bass on real compositions where Bach or musicians of his epoque have notated the full setting. It will be easy to find both versions in IMSLP.
There are several texts that are readable. One is available on IMSLP: imslp.org/wiki/Thorough-Bass_Made_Easy_(Pasquali%2C_Nicolo)
Arnold's two volume set is available from Dover so not too expensive. Not all thorough bass manuals agree with each other. Likewise, much modern stuff (like secondary dominants AKA applied or attendent chords) were not well described until around 1890 (Francis York's and Frank Shepard's books freely available). It probably pays to look at older stuff in conjunction with modern texts.
Bach, Mozart, and Beethoven did have somewhat different educations. Bach studied with his brother and did lots of score study from well known musicians (as did others). Mozart studied with his father (a rather famous teacher at the time) and did lots (apparently) with "Partimenti" (See the site: Monuments of Partimenti) to see how various patterns were learned. Beethoven studied with Neef who was a well-known composer and teacher (and later with Haydn and Albrechtsberger). Albrechtsberger's teachings are available on the net.
All of these though use the hexachord description of scales (combined with some major-minor theory). One overlaps 6-note series with each other C-D-E-F-G-A and F-G-A-B(b)-C-D and G-A-B-C-D-E (which go by the names ut-re-mi-fa-so-la). This gives a method describing all notes from low G (gamma-ut) for several octaves. The name get funny as F can be either "ut" in the "soft" hexachord or fa in the "natural" hexachord (it doesn't occur in the "hard" hexachord.) It's rather complicated. Renaissance counterpoint used notes not describable with this system so more flats (and some sharps) were introduced and composers and performers were supposed to know how to insert unmarked accidentals. Here's a good description of hexachordal theory.
www2.siba.fi/muste1/index.php?id=72&la=en
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