Sustaining problems

I get a lot of questions from clients who call after an appointment and report that something is wrong with the sustain. It’s often described as follows: “the top octave is sustaining starting at the second F from the top.” 
 

This is normal, and all pianos are designed to do so. The reason the rest of the notes don’t sustain all of the time is due to the dampers, or, the felts that mute the sound when the key is released or when the pedal is returned to rest. Well then, why? 
 

One reason is to allow the notes in the top, which aren’t used as much, to vibrate and ring sympathetically with the notes that are being played below. The sounds from the discant add to the overall voice of the piano, and give it more complexity. 

Another reason is because those strings have a much shorter sustain that the longer strings. Play the first A note (not the very last one on the end!) and watch the time it takes for that note to completely stop ringing. On a Boston upright 126E I measured it to be over 40 seconds! Now play the second to last A in the treble, do you notice a difference? That note only rang for around five seconds. So, the dampers stop at around F6 because there really isn’t much use for them up in the top octave. 
 

Included is a photo from an upright piano to show you the dampers and exactly where they stop. The piano is a well used Boston 126, designed by Steinway & Sons. 
 

Piano Appointment Etiquette

On appointment day you should expect the piano tuner to arrive on time. If you are the first appointment of the day, your technician may arrive at the exact moment agreed upon. I start at either 9 am or 9:30 am.  I can honestly say that I'm never off by more than 10 minutes, usually due to unexpected traffic. The other appointments are trickier to be that accurate. Unforeseen repairs or tuning conditions can make the previous appointment run longer. I like to space my tunings out by 1.5 hours when the customers live in the same town. Again, I'm rarely late, but if it's going to happen, I always call to let my customers know that it's going to happen.

When the tuner arrives, he or she should be cheerful. This is because we love our job! I can't think of a single time when I arrived and I didn't want to be there to help a customer with their piano.

You may ask them to remove their shoes, and I expect all tuners in the city to be ready to do so. We never took our shoes off growing up, but now it is my habit to do so in every home, work related or not. My mother lives in rural Vermont, and there is a sort of culture and expectation of a little dirt around the house, so I can appreciate that the "shoe rule" doesn't apply to all geographical regions.

The first thing you, as the piano owner, should prepare for is the technician to open the piano, so you should remove anything from the top before they get there. Usually the lid of the piano is home to music books, pencils, children's toys, pictures in frames, sculptures, lamps, etc. If you don't remove this stuff, the tuner will have to do it, and their fear is that something will get damaged. Even when I arrive and there are things on the piano, I kindly ask that they remove everything because I won't know where to put it. 

The tech will need to take the front panel off to get access to the strings, action, and tuning pins. This should be done with care by the technician. If he or she doesn't seem to know how to get the parts off, give them a minute. All pianos were created differently, and sometimes it's not obvious how to remove the parts.  But if it takes more than 5 full minutes, this might be a red flag that they are green, or just don't have the proper training.

Piano tuning takes an incredible amount of concentration. A tuner listens to the relationship of two strings played together and adjusts one string, listening for a very small variation in frequency. It's expected that there is near silence while they are doing their work. Loud conversations, television, and vacuuming is not recommended. Sometimes people like to have the plumber, HVAC tech, cleaning crews and the piano tuner all scheduled on the same day since they may have to be home from work to let everyone in. Resist this urge!! I can't tune properly while there is so much auditory interference.

The worst thing you can do while a technician is tuning your piano is wash the dishes. The sounds of a faucet and sharp clanging of porcelain, glass and metal are infinitely distracting. It's possible to tune a piano while these things are happening, but don't expect to record your hit single afterwards.

The appointment carries on though, and around one + hours later they should be done. I usually play a few chords of songs that I would like to master, and that's the cue that the tuning is finished. The piano get's closed up and I briefly discuss when to expect to tune the piano again. As I've said before, your ear is the best judge as to when you should make an appointment.  

Thanks are exchanged, as well as a polite handshake, and the fee for the work performed. I expect that services are paid for at the end of the visit, and I used to accept a check or cash, but now I prefer to take a credit card. It’s faster, and you can get a receipt emailed or texted to you. Ask for their business card, and if you're happy with their work, refer them to a friend, music teacher, or on a website!

Pitch Correction

What is a pitch correction?  In short, when a piano tuner comes over for an appointment, he or she can fine tune the piano in one tuning when the piano is close to pitch.  If it's not close, than it takes two tunings to get it right.  That first tuning is the pitch correction.  Both tunings happen at the same visit.  So why can't it be tuned accurately on the first tuning?

Your piano has over 230 strings stretching from the pin block down to a bridge and anchored onto the cast iron plate.  The tension of the strings is applied directly onto the bridge in order to create the sound you hear when you play a note.  But the bridge can be anywhere from three feet long and seven feet long. 

When the piano is very flat, and the technician turns the tuning pin to adjusts the pitch, this new tension creates a new force of bearing across the bridge.  Imagine a tight rope stretched between two trees with a little slack in the wire.  You stand on the rope close to one tree and the rest of the wire tightens because of your force bearing down.  Now imagine your friend stands on the wire close to the other tree.  Their force (in this case, applied by weight and gravity) will add more tension to the wire, and it makes your body rise up a little.

So now we can envision the tight rope is the bridge of the piano, and when there is no one on it the pitch is 435.  When the tuner tightens the bass notes to 441, that represents the first person standing on the wire.  When the second person stands on the wire at 441, your pitch drops to ~440.  So when the whole piano is tuned, its nearly impossible to accurately tune the whole instrument to 440, so they adjust the pitch to be a little sharp in one pass to get the piano roughly in tune.  Once its at pitch, they can fine tune it and make it sound like a piano again.

Lastly, you may wonder why your piano needs to be tuned to A440.  When the strings are all tightened to the right pitch, it creates around 20 tons of pressure bearing down on the soundboard.  The soundboard of a piano isn't flat, it's slightly arched, or crowned, sort of like a contact lens.  Pianos are engineered around the assumption that the pitch will be A440, and so they put more crown in the soundboard to settle at the correct shape when the strings are pulled tight.  And when the pitch starts to go down, or flat, than there isn't the right amount of pressure against the board and the sound isn't generated in a way that is desirable.  So your instrument should be brought up to the right pitch.  

Also, if the piano is a teaching instrument, when it's flat, the student learns the incorrect sound from that piano and makes it difficult to practice on other pianos because the sound is very odd.  When you want to sing with the piano, or play other instruments, it makes it very difficult to play together.  The piano will sound flat unless all the other instruments, including the voice, are tuned down to the piano. 

How Long Does It Take To Tune A Piano?

A qualified technician can tune a piano in less than 1.5 hours.  An appointment to tune your piano is expected to be around 2 hours to allow for unforseen repairs or adjustments and a little banter with you, the piano owner.

Pianos that are very flat or very sharp need what we call a pitch correction.  A tuner brings the pitch of the piano up to A440, measured at the A above middle C, in a quick pass to apply the correct bearing on the soundboard.  Next they will fine tune the piano.  This still may only take 1.5 hours, but can take as much as 2 hours.  Unlike a guitar with 6 strings, or a violin with 4, a piano has over 230 strings!  Tuning is a skilled art, and requires an extreme amount of concentration.   

Don't be surprised if your piano tuner takes less than an hour to tune your piano.  An upright piano at pitch often takes me less than an hour, but this is not the standard.  If you haven't had the piano tuned in more than a year and your tuner only takes 15-20 minutes, then I would be concerned they weren't completing the job correctly.