Maybe you’ve heard this term before; maybe you haven’t; maybe a salesperson once told you, “You definitely need duplex scaling”. whatever your familiarity with duplex scaling, you will learn something about this technology today.

So what is duplex scaling? Simply put, it’s a tone enhancement system that is used in some pianos to increase tone life. That sounds great, but how does it work?

Every piano has something referred to as the “speaking length” of the string. This is the part of the string that is free to vibrate. In the image below the speaking length is highlighted in yellow:

Typically the area above and below the speaking length of the string is muted out with felt. You can see this area highlighted in yellow in the image below:

Why would this area be muted out with felt? Typically this area of the strings is not capable of adding pleasing harmonics to the sound. Duplex scaling utilizes a technology that tunes the non-speaking length of the strings to enable them to vibrate at musically pleasing frequencies.

Aliquots are used in duplex scaling to precisely terminate the strings at lengths that produce pitches that are complementary to the pitch that is being played. So instead of felt that is used to terminate the string, you have something that looks like this:

On a piano with Duplex scaling you will get the same pitch as all three strings, typically an octave or an octave and a fifth above the notes – which are overtones already contained within the fundamental pitch. The purpose of this system is to enhance the tone by creating more sound from each note.

Most pianos that contain duplex scaling typically feature it on the rear portion of the string. Certain pianos (like the one we are demonstrating in this article) has two sets of duplex scaling in both the rear and the front portion of the strings.

Most pianos use part of the plate above the treble section of the piano (capo d’astro bar) to terminate the strings. On this particular piano, there is a front set of aliquots which allows for the front section of strings to add useful harmonics due to sympathetic vibration, just as depressing the damper pedal adds richness to the tone.

So you’re probably wondering whether or not duplex scaling is something you must have on your piano. While duplex scaling is a useful technology that can enhance the tone of the piano, there are myriad scale design technologies that allow for different tonal results that can be equal in beauty of tone. Duplex scaling is just one way to enhance piano tone.

This is a very overlooked topic for many pianists. Ending a piece correctly is extremely important and is crucial to a great performance. While there is no one solution to the challenge, I will provide some tips on how to make your endings memorable.

For the example in the video above I use the Chopin Prelude in E Minor. The ending of this piece has three chords. It’s a simple ending but it can be a very powerful one with the right technique. You’ll want the music to linger in the air even after the sound has stopped.

The trick is to release the hands and pedals very slowly at the same time. This way if you have any issues with damper regulation on the piano the effects are minimized. You don’t want certain notes sticking out and being louder than others and you certainly don’t want an abrupt ending.

Many students will end a piece very abruptly and then take their hands and slap them down on their lap and act like it’s a relief to be done playing! Nothing sucks the mood out a room more than someone displaying negative emotions onstage.

When you hear great performances in concert halls there might be a few seconds of absolute silence after a piece. It’s a powerful tool to let the music and the emotion seep into your music. Sometimes music will actually end with fermata on the double bar even when there is no music. What is the composer telling you in a situation like this? They are visually representing what we have discussed here – letting you know that even though the music has stopped, the mood should linger in the air for a few moments. In this case it’s an actual part of the piece.

Another mistake that some people make is to rely completely on the pedal at the end of a piece. On a well regulated piano it might sound OK but taking your hands off the keyboard early will make the audience think the piece has ended – even if it technically hasn’t. This is true for changing movements as well. If you keep your hands on the keyboard it will let the audience know that there is more to come.

This has been a common question for me; many students have asked me what I would recommend helping them prepare for upcoming piano exams. I remember my days in music conservatory preparing for piano exams in preparation for recitals. In case you aren’t familiar, piano exams consist of sitting in front of a jury who generally spot check the music. This can be a daunting process!

The tests consist mostly of being asked to play certain selections from your current recital program. You may be stopped abruptly in the middle of your playing. This can happen throughout the exam and become very disconcerting if you don’t know what to expect. You might feel that they think you are playing badly but this is just part of the procedure and there is nothing to worry about.

But how do you prepare for this? The best thing to do is to practice like you would for a recital. While you might only be playing certain selections from your music, you should be prepared to play the entire program since it’s impossible to predict what they will ask for, just like any audition.

An essential practice technique is practicing without the pedal – this can be incredibly beneficial because you will hear more detail so your hands and fingers zero in on corrections quickly. You should also practice with the metronome and also combine these two techniques. These are essential piano practice techniques that will solidify your playing.

More than any physical technique, you will want to live with the music inside you. Play the music mentally away from the piano. Making yourself play the music away from the piano will better prepare you when you actually play on the piano. In order to play the piece in your head without even moving your fingers or looking at the keyboard, you have to be incredibly familiar with the score. It can be very reassuring to get the music mastered on this level. No matter who you are or how well you are prepared, mishaps can happen to the best concert pianists. In the event of a mistake, you must recover quickly and keep the music flowing. Knowing your scores enables you to keep the flow of the music going no matter what happens.

You may learn your scores so well that you literally play them in your sleep! When you sit at the piano you will want the music to come out of you with minimal effort. However, you will not want to play your music on autopilot. You should constantly stay focused on what you are doing and where you are in the piece instead of relying on tactile memory.

When preparing for an exam or a recital, performing a practice run through in front of family or friends is absolutely essential. If the first time you perform your music it is in a high-pressure situation, you will be at a distinct disadvantage. Try working with your colleagues testing each other through mock piano juries! Have them stop and start you abruptly – have them even critique you in a stone-faced manner. These techniques will benefit you when the time comes for your actual exam.

Remember that auditions are not necessarily satisfying musical experiences. The judges may have listened to dozens of students before you even show up. They may be tired and hungry. They are simply getting a job done. Their demeanor doesn’t necessarily reflect upon you. Remember that they are not there for the same reasons you are – they are simply there to test.

Portato (commonly referred to as Portamento) is somewhere between legato and staccato. Legato means to play notes connected while staccato means to play them detached, sometimes even short in faster music. Portato would fall in-between these two styles of play. Generally, the notes are played long but slightly detached. Portato is not an exact science so knowing how to play is determined by what style of music you’re playing, the tempo, as well as the context of the particular passage.

You probably know that the hammers are responsible for striking the strings on the piano and producing a sound. The dampers are the pieces of wood covered with felt that lie above the strings and are responsible for ending notes.

When you play a note on the piano the damper comes up so the hammer can strike the string and make a tone. When you let go, the damper falls back onto the string and mutes the sound. You might notice that when you hold down the damper or sustain pedal (the one on the right), all the dampers are released and will remain raised until you take pressure off the pedal leaving the strings free to vibrate and produce a long lasting tone.

When you press the damper pedal and all the dampers remain raised, it will make the tone echo inside the piano because of sympathetic vibrations. If you want to have some fun, try holding down the damper pedal and singing into your piano – the sound of your voice will echo around the piano for quite some time; it’s a fun trick you can share with family or friends.

The important thing about this is that you can affect the tone of a melody by using the pedal and keeping the dampers raised. When you play with the sustain pedal down you will get a much fuller tone.

What you might not know is that the sustenuto pedal, the middle pedal is a selective sustain pedal when it comes to dampers. When you depress some keys then press down and hold down the sustenuto pedal, the dampers above only those notes will remain raised. If you play other notes while continuing to hold down the sustenuto pedal, the dampers of new notes will respond like normal and fall back onto the strings once you let go of those keys even though the sustenuto pedal will continue allowing the original notes to sound. This is useful in music which would require 3 hands to play otherwise.

Generally, dampers will do what they are intended to do or not. That is to say, when they are down they should end a note and when they are up they should let a note sustain. If you have ever had notes hang up – keep playing after you let go of the keys and pedals, then you are in need of damper regulation to get them working correctly again. Damper regulation may be required if you hear buzzing at the end of notes. Dampers can be regulated but sometimes the felt becomes old, hard, and worn out and must be replaced in order to function properly. This is a very common problem on older pianos however, it can be fixed with the right technician.

One thing you might have noticed is that there are no dampers above the highest notes on the piano. You might wonder if this is a mistake or something intentional. The fact is, most of the notes that don’t have dampers simply don’t need them – they are not able to sustain long enough to necessitate dampers. The first note that has no damper is usually the 2nd to highest E on the piano. Sometimes on a very fine piano, notes in this register can last a very long time; without dampers there is really nothing you can do about this.

I hope this clarifies some aspects of this important part of the piano. Thanks for reading and watching and as always I welcome additional questions and comments.