Continuo, Part 3
The core of this month’s column is a description of the approach that I suggest for drilling and learning the actual—improvised—creation of continuo parts at the keyboard. The fundamental reason that it is better to improvise continuo parts than to play from a part—a realization—written out in advance is that the most effective continuo accompaniment is one that is flexible. Even at the last minute, but certainly during any process of rehearsal and preparation, it is important to be able to make basic decisions about what notes to play in response to things that we hear from the other players: dynamics, accentuation, intonation, and so on. The earlier in the process the notes are fixed once and for all, the less flexible it is possible to be. So, in playing, unaltered, a continuo realization written by the editor of a published version of a piece, we are committing ourselves to having no flexibility whatsoever during the rehearsal and performance process. Most published realizations are very thick—four voices most of the time—and, in the judgment of many players and listeners, too busy, too noisy. (This is especially true when they are played on organ or harpsichord. At the piano the busy-ness can be made less of a problem by simply playing the part more quietly.) But any realization that is created beforehand, even a wonderfully musical and sensitive one, lacks this flexibility. A player who works out a continuo realization during preparation and rehearsal, and writes it down planning to play it as is, has the opportunity to make it a good realization. But in this approach, last-minute flexibility is still lacking.
(Actual last-minute flexibility—the ability to change the notes of a continuo part in performance from what they were even a short time before in rehearsal—can be desirable for several reasons. Some of these are: a change in the room acoustics with the arrival of an audience; an unanticipated change in the way a colleague is playing his or her part; problems in performance that suggest that you must project the beat more forcefully; and—most happily!—the fact that a new and better idea occurs to you.)
It also turns out to be easier in the end to learn how to realize continuo parts at sight than either to write them out in advance or to edit existing, published realizations to make them suitable for a given occasion. (And “suitable” still doesn’t take the idea of flexibility into account.) My own reason for plunging into studying continuo realization in the first place—about twenty-five years ago—was not anything artistically significant, but rather extreme annoyance with the mechanics of writing out parts for myself: it was boring, and it took too long.
In the decades following the disappearance of continuo playing as a living art, the notation and technique of continuo realization—figured-bass realization—was borrowed to fill various roles in the teaching of theory, harmony, and counterpoint. It is routine, almost universal, nowadays that anyone who has studied music theory at the college level has spent time learning how to concoct and write out realizations of figured bass lines. Because this activity is done in order to further the learning of something other than actual continuo playing, the kind of realization that is being sought is very different from what is best in performance. Specifically, in theory class, or a similar setting, it is almost always considered necessary to realize in a certain number of contrapuntal voices—probably ideally four, or three to make it easier. The rules of voice leading of course must be followed, and perhaps it is expected that each voice will be kept mostly within a certain range. Often this kind of exercise is presented in two alternate versions: one with all of the added notes in what amounts to the right hand—say, middle C and above—and the other with the four voices more or less evenly distributed, creating a hymn-like texture. In any case, again, all of the rules must be followed. It is (mostly) the need to avoid parallel fifths and octaves that can make practitioners of this sort of exercise tear their hair out.
It is often their experiences with figured-bass realization in such a context that leads students to believe that it is almost unimaginably hard to play continuo at sight. After all, if something is so difficult and awkward even when you have all day to puzzle over it, to try different things, and to write it out, study it, and think about it, then it must be effectively impossible to do it off the cuff while other musicians are actually playing and expecting you to keep up. This logic is good, but the facts are wrong. What you do when actually playing continuo bears very little relation to the “figured-bass as theory-learning tool” activity, and is in some ways directly opposed to it. The last thing that is desirable in a “real” continuo part is, of course, that the number of voices remain always the same. That immediately and utterly prevents us from using the realization process to influence rhythm, dynamics, texture, and so on. That is, it takes away the very reason for the existence of continuo accompaniment.
The process of actually learning to play continuo, therefore, does not go through the kind of theory-oriented figured-bass study that I describe above. That kind of study can serve a purpose similar to the reading exercise that I included in last month’s column, that is, to bring a student to the point of knowing the meaning of the figures with real immediacy and ease. (It is overkill for that purpose, in the amount of time and effort that it takes, but it does accomplish it.) For every aspect of learning continuo playing after the meaning of the figures is well established, work on “continuo as theory/harmony/counterpoint” is actually taking us in the wrong direction.
If a student develops a strong sense—simultaneously conscious and instinctive—of what constellation of keys on the keyboard any given note/figure combination is pointing towards, and this sense directs the fingers towards those notes without the need to think much about it, then that student can play continuo at sight. That is, when the student who can already pick up the exercise from the last month’s column and “look at the first note and say ‘F’, the second note and say ‘A, C, and E’, the third note and say ‘F and C’” can play those notes rather than say them, he or she can take on continuo parts from real pieces with other players also playing.
The most effective way to develop that sense goes like this:
1) Find a bass line with some figures. It doesn’t matter very much what the bass line is, although lines from harmonically dense choral or orchestral music can be harder to deal with than is ideal at this stage. Handel chamber music is one excellent source, among many. (A public domain edition can be found at this address: <http://216.129.110.22/files/imglnks/usimg/4/4d/IMSLP05632-Handel_19_Son…;. There are appropriate bass lines on more or less every page.) The bass line can come from a slow or a fast movement. For reasons explained below, this doesn’t matter at all. It need not be a complete movement of a piece or any coherent section, just some notes and figures.
2) Put this bass line up on the music desk of a keyboard instrument. For this purpose it doesn’t matter what instrument: harpsichord, organ, piano, electronic keyboard—anything with at least about four octaves of normal keys.
3) Prepare to play the line very slowly. Because the tempo at which you play this bass line and do this exercise bears no relation to anything about performing the piece from which you have extracted the line, it doesn’t matter what the tempo of that piece might normally be. Each note of the bass line must come along very slowly, regardless of whether it is printed as a whole note or a thirty-second note or anything else. For someone beginning this process, the notes of the bass line should come at a rate of no more than ten or twelve per minute. But that is just a guideline: slower is always fine; faster is also fine if it works.
4) As you play the bass line very slowly, try, for each note of the line, to play (in the right hand) some version—any version—of the notes suggested by the bass note and its figuring. Do not think about anything other than playing something that counts as the right notes: the playing equivalent of what you thought or said in doing the exercise from last month. Specifically, do not worry about the spacing of chords, the part of the compass of the instrument, or the nature of the transition from what you play with one bass note to what you play with the next. Do not worry in the least about parallel fifths or octaves or whether notes resolve correctly.
5) If you cannot—more or less in tempo—think of any notes to add above a given bass note, simply move on. Do not worry about this. If, the first time through, you only add ordinary triads above the “8,5,3” notes—or even only above some of them—and nothing “fancier”, do not worry about this.
6) After you have played the bass line and whatever notes you have added in this way once, do it again. Don’t increase the tempo. Try to add some notes where you didn’t the first time. Then, of course, do it a few more times. If it feels natural to let the tempo increase a little bit that is all right, but by no means necessary. However:
7) Do not play the same line more than several times. If after a while (four or five times through) you have not succeeded in providing right hand notes for all of the bass line, don’t worry about this either. The effectiveness of this drill does not depend on “solving” the entire bass line, but rather on developing a sense of spontaneity with those spots that you do solve. If you play over it too many times in a row, that sense of spontaneity will be lost and replaced by excessive concern for getting it all right.
8) Choose another bass line, and do all of the above again. This can be another section from the same movement or piece, or something completely different. Practice this way with as many bass line passages as possible. Never stay with one of them so long that you feel like you know it and are simply repeating something that you have already learned: move on to another one. Try to use lines in different keys, but you need not seek out anything too unusual: two sharps or flats is far enough along the circle of fifths for now. If most of what you use is in keys with one or no sharps or flats that is OK. Just don’t stick to only one key. That can become a rut.
All of the details above are important, but clearly step 4 is the essence of this exercise. Here are a few more specific thoughts about how to carry out that step.
a) It is perfectly all right for the tempo of the bass line not to be entirely steady. (This is certainly different from most types of practicing.) It doesn’t exactly need a tempo, but only be not too fast. If you need to draw one note out a little bit longer to think about what to play over that note, that is OK, as long as it is only a little bit. If you are really, in effect, stopping to figure something out, then that defeats the purpose.
b) You need not play all the notes that you add at the same time as the bass note or together with one another, though as you do more of this exercise you should discover that you can add the relevant notes with or close to the bass note more of the time. Initially it is perfectly acceptable to do something like this: set a metronome to 60; allow each bass note to last for eight metronome beats; expect to play the added notes on or near the fifth metronome beat; use the last beat or two to begin to look ahead at the next note. The numbers are arbitrary; the principle of keeping it slow and careful is crucial.
c) If you make certain kinds of mistakes about what the figuring means or what notes would be appropriate to add over a particular bass note, this doesn’t matter! One extraordinary thing about this exercise is that it usually leads a student to the right place even if it is done wrong. The most common way that this comes up has to do with un-figured notes. If you mistakenly assume that a passing tone is not a passing tone, and therefore add chords to bass notes that are not supposed to have anything added, this just constitutes more (fully useful) practice. If you interpret as a passing tone a note that really should have something added, and don’t add anything, that is a very minor wasted opportunity. It doesn’t mislead or do any harm. If you forget, for example, that “7” usually implies “7,5,3” and just play the pitch seven degrees above the bass note, that is still useful practice in developing the spontaneity that we are looking for. There is time to refine and fill in gaps in your awareness of what the figuring means and what the abbreviation conventions were later on.
d) Likewise, leaving out things that are too complicated or unexpected—for example a figuring like “9, 7#, 4, 3b”—is not a problem. You have simply utilized one less practice note: no harm done. Reading really elaborate, complicated, counterintuitive figures can come later. In any case they are extremely rare. It is of course OK not to leave them out, but only if they are accurate and don’t slow the process up very much.
e) Of course, really fundamental mistakes—taking “6,3” to mean the notes one and four steps above the bass, for example, or anything else really egregious—will lead to trouble. Real misunderstanding at a fundamental level will be hard to eradicate later on. Therefore this exercise should come, as I said above, only after the student has comfortably learned the basic meaning of the figures.
f) It is extremely important to resist the temptation to write anything down about a realization. The sole purpose of this drill is to develop the reading faculties as they apply to figured bass lines. Any time you write anything—a note or chord or a reminder perhaps expressed as a letter-name for a pitch—you have lost the opportunity to develop that reading, and in fact you are training yourself to be unable to do it.
g) It is perfectly OK, though, to flesh out the figuring itself. The relative completeness of the figuring of the line that you happen to be using for practice is arbitrary. If you make it more complete before playing from it that is fine. (See, for example, the two versions of the Handel bass line that I included in last month’s column. Either of them is good material for this sort of practice.)
After doing a certain amount of this work, the student will be ready to begin thinking about how to shape an accompaniment for “real life” use, and to begin playing pieces with other musicians. This “certain amount” is often something like 25 or 30 bass lines, each eight to sixteen measures, each played five or six times. That is not a lot, but this method is extremely efficient. Some students will need or want to do more than that; some will be ready to move on to the next stage sooner.
I will return to the subject of continuo playing and deal with approaches to entering that next stage in a future column. Not next month, however; I want to give readers a chance to digest what I have written about it so far and, if so inclined, to try out the drill suggested here or to have their students do so. I welcome both questions about that process as it unfolds, from anyone who is trying it, and any other feedback.
