How to use the piano pedals (sustain and soft pedals)
Pedaling is an aspect of piano technique which is frequently misunderstood and abused. Ask a junior student what the right-hand pedal is for, and they will invariably reply “to make the piano louder”.
The right-hand pedal is often wrongly called “the loud pedal”, or is regarded as an “on-off switch”, which shows a complete lack of understanding of the purpose and uses of the “sustain” or “damper” pedal. Pedaling is hard to do well, and I regularly come across instances of sloppy, lazy or misjudged pedaling when I am reviewing at professional concerts.
The sustain pedal has two principal purposes:
1. Allowing the sound to continue even after we release the keys;
2. Changing the timbre of the sound, making it deeper, warmer, more intense, more ‘alive’.
In order to pedal well, it is important to understand what is happening, mechanically, inside the piano, and to engage the ears so that they are alert to all the subtle sounds and variations the pedal can produce. When the pedal is depressed, all the dampers are lifted off the strings so that they can continue to vibrate and sound after a note on the keyboard has been released. The effect of the vibrations is to create a fuller, warmer and more intense sound.
When I demonstrate this to students, I play a C-major chord without the pedal, and then play the chord again with the pedal. A student who is listening carefully will notice the cloud or “bloom” of sound which seems to rise from the piano (as opposed to just saying “it sounds louder”). This bloom of sound is the result of ‘sympathetic vibrations’, and will mostly be pitches related to the principal note.
Since the resonance of the entire instrument is called into play when the dampers are lifted off the strings, the chief effect of the damper pedal is a change in the sound quality of the piano. And this, I think, is the key point to remember – that the damper pedal is about quality of sound, rather than volume of sound
The point when the pedal is depressed can have a particular effect on the sound of the piano. For example, when the pedal is depressed before the note is struck, all strings are available to resonate, and the sound will have a richness from the beginning. While it is held down, the pedal accumulates sound with each additional note struck. This property can be used to create or enhance a crescendo, particularly in a context of more rapid notes where little pedal is being used. Conversely, by lifting the pedal slowly, there is a gradual decrease in the sound, which creates a diminuendo.
There are also degrees of pedal, such as half, quarter or even eighth pedal. This technique of pedaling is particularly useful in Mozart, or during runs and passagework, where it gives substance to the tone without blurring the sounds. For example, in Schubert’s E flat Impromptu from the D899 set, I use one-eighth pedal throughout the rapid triplet runs to provide depth without losing clarity: we want to hear every single note, but we don’t want the music to sound too dry.
Every piano is different and so it is important to experiment – and listen carefully: special colours and immediacy of effect can be achieved by synchronising pedal changes with finger attack, while pedaling before playing can soften the opening of a phrase. Pedal use is also determined by the size and location of the instrument.
Experienced pianists use the pedal instinctively. I often get ticked off by cheeky students for pedaling music which has no pedal markings. This usually prompts a discussion on the use of the pedal to create certain effects, and how pedal markings are written into the score. Good pedal technique is based on experience, careful listening, and thoughtful practice.
“The more I play, the more I am convinced the pedal is the soul of the pianoforte!”
Arthur Rubinstein
“….abusing the pedal is only a means of covering up a lack of technique, and that making a lot of noise is a way to drown the music you’re slaughtering!”
Claude Debussy
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Legato pedal
Legato pedaling, in its simplest form, is the act of joining two otherwise unconnected notes or chords together. Logically this can only happen when the sound of the first note/chord stops and the sound of the second note/chord begins at the same time. To achieve this, the pedal must come up exactly at the point at which the next chord sounds. Where it then goes down is a matter of judgement to do with the type of musical context or the effect desired, speed of the passage etc.
Here is a simple but effective exercise, easily comprehensible for junior piano students, to practice good legato pedaling.
Practice this exercise by depressing the pedal on the 2nd beat of each bar and bringing it up exactly on the downbeat of the next new chord. Legato pedaling makes use of coordination opposites: in other words, the foot releases the pedal exactly when the hand goes down. The pedal then goes down again without being snatched and rushed at some point after the first beat.
And how not to do it:
Download the full exercise:
Pedal markings
Ped and * marks are often placed inaccurately, which can make interpretation of the composer’s intentions regarding pedaling confusing. For example, the Ped…….* pedal markings in Chopin are often misleading, and should not be interpreted literally: it is more likely that Chopin intended continuous use of the sustain pedal, and that this type of pedal marking would be more accurate: __/\_/\__ (etc.).
It is said that Chopin “used the pedals with marvelous discretion,” (Auguste Marmontel, Debussy’s teacher and a former student of Chopin), and Chopin himself declared that “The correct employment of the pedal remains a study for life.”
When writing a legato pedaling scheme onto music for both my students and myself, I tend to use this marking __/\_/\__, rather than the more traditional Ped…….*, simply because it’s clearer, the “peaks” indicating when the pedal should be lifted and depressed.
Direct, finger and “dirty” pedalling
Direct pedaling is where the pedal goes down exactly as the hands do. The style of the music will influence how the pedal is used: for example, in classical repertoire, a direct pedal, corresponding with the hands, can often be applied to two-note slurs, sfzorzandi, and cadential chords without distorting articulation and phrasing. “Finger pedaling” should be considered with Alberti bass figures.
“Dirty” pedaling requires acute listening skills and is appropriate when a more misty sound and colour are desired, or when the texture needs to be thinned out gradually. Lift the pedal very slowly. I have found this technique particularly useful in Liszt when the composer designates a smorzando with a diminuendo.
Debussy and the sustain pedal
Pedaling was – and is! – very important in the playing of Debussy’s piano music, though Debussy almost never marked pedaling on the score. Where he does, it should be observed carefully. Too many pianists, professional and amateur, believe that the pedal in Debussy is used to create the famous “impressionistic blur” so often associated with his music. In fact, “he wanted the pedal used in long harmonic strokes, without breaks or confusion. Occasionally he allowed the pedal to encroach a tiny fraction from one harmony into the next………….. In any case, the blur should be used only for special effects, and with utmost discretion.” [Nichols]
Debussy’s works often imply the use of pedal, because he writes bass notes that cannot be sustained without the help of the pedal. At the same time there are often chord changes that require the pedal to be lifted in order to avoid blurring. Techniques such as half-pedal and “dirty” pedal can be used to create satisfying effects in his piano music.
The Soft Pedal: Una Corda (left)
Una Corda is the direction to the pianist to apply the left-hand or soft pedal. The function of the soft pedal was invented by Bartolomeo Cristofori, the inventor of the piano. In the 18th and early 19th centuries, the piano had evolved to have three strings on most of the notes. When the una corda pedal was applied, the action of the piano would shift so that only one string was struck – hence the words “una corda”, or “one string”.
On a modern grand piano the strings are placed too closely to permit a true una corda effect: the left-hand pedal shifts the whole action, including the keyboard slightly to the right, so that hammers which normally strike all three of the strings for a note strike only two of them. The resulting sound is softer and also has a duller quality due to the two strings being struck making contact with a part of the hammer felt which is not often hit and which is therefore slightly softer in density, creating a different quality of sound.
On an upright piano, the mechanism is arranged so that when the left-hand pedal is applied, the resting position of the hammers is moved closer to the strings so that they have a shorter distance to travel and therefore the strings are struck with less force, creating less sound.
While the una corda pedal can be used to achieved wonderfully soft, muted and veiled effects in piano music, it is not simply a “quiet pedal”, any more than the right-hand, sustaining pedal is the “loud pedal”, and just as there are “degrees” of sustaining pedal, depending on the repertoire, so the una corda can be depressed in a variety of ways to create multi-faceted musical colours and sonorities. As with all pedalling, an acute ear, practise, discretion and experimentation will lead to greater confidence and expertise, resulting in truly wonderful effects.
Here is Beethoven giving very specific directions in the use of the una corda pedal: he stipulates lifting the left pedal so gently that only bit by bit are all the strings sounding again – only two initially and ultimately all three again: