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  • A few months ago, when I received a call from Caroline Mousset who is the

  • Artistic Director of the concert series of The Phillips Collection

  • it was very exciting because they had raised the funds with which to rebuild

  • their piano. So we were thrilled; we've been caring for this piano for about

  • 10 years, and we knew that it really, really needed this

  • and so it was very exciting. It was even more exciting when I learned that it was

  • for the 75th anniversary of the concert series, and the 60th anniversary of

  • Glenn Gould's debut, and the incredible pianists that are going to be playing on this

  • piano that we now have the responsibility to restore in a really small amount of time.

  • Every piano has strengths and weaknesses; no piano is perfect.

  • But the demands on this piano:

  • This is The Phillips Collection, this is Washington, DC; it really had to be a

  • great, great instrument.

  • The first thing we do is we assess the instrument, so we check everything:

  • We check the hammers, we check the strings and we check the bridges, we check

  • the soundboard and the pin block and the structure of the piano.

  • One of our technicians you got up under the piano and he found underneath the

  • soundboard in the ribs of the instrument cracks in a very unusual

  • location, and this was affecting the energy of the soundboard.

  • This was the opportunity to really do something great, to make it a great

  • Steinway, to get that beautiful authentic Steinway sound and performance, and we

  • knew that it wasn't a matter of repairing the factory work, but actually

  • we had to replace the soundboard, and we had to replace the pin block, and we had

  • to put in new bridge caps and new strings.

  • There have been observations about that piano, that it was out of balance:

  • much, much louder in the bass section than in the treble section, and it was

  • not a matter of tuning or voicing, or basic fundamental work; it was actually a

  • flaw in the factory soundboard.

  • Fortunately, we happen to have some beautiful, beautiful wood for the

  • soundboard of this piano from spruce trees between 600 and 800 years old, and so

  • that was exciting because we knew we had been seasoning this wood long enough

  • that it would give us a very predictable result; very beautiful, beautiful wood

  • and very stable. Of course, with the limited amount of time

  • everybody had to drop everything, put their focus on this piano;

  • we even had two of our expert bridge notchers working on the bridge at the same

  • time, one from one end, and one from the other, kind of notching the bridge and

  • they're going to meet in the middle.

  • What we want to start doing now is taking measurements that we use down the

  • road to basically get the plate back into place where we want it.

  • Those measurements will include string height measurements; right now I'm taking

  • the plate height.

  • One thing I noticed when I was looking at the height of the plate in the back

  • is that the plate is very low, which means the base of the plate is very

  • close to the soundboard. This is a very good thing when we're rebuilding a piano

  • because it allows us to increase the height of the plate in the back, which

  • will increase the thickness of the bridge cap, which we tend to find superior.

  • Now the next thing we're going to do is come up with the string heights; this

  • helps the action department adjust things like hammer blow, hammer strike

  • distance, without actually having the action inside the piano. You basically

  • accomplish this just by setting this dowel rod, and then measuring the height

  • of it, and this we try to get accurate down to a quarter of a millimeter.

  • The next thing we do is to determine that the scaling when we're done

  • with the piano is accurate as we measure the lengths of various strings across the piano.

  • One thousand three hundred and sixty-nine: that's the exact length of note 20.

  • Alright, thanks.

  • Now as you can see we've already removed quite a few pieces of the piano.

  • The dampers have been taken out, the back action has been removed, all the case

  • parts are now gone, and now we're clear to start de-tensioning

  • the wires.

  • Once that's done, we can actually take the plate out of the piano and start

  • working on everything else.

  • This tool we're using is actually over a hundred twenty years old.

  • I found it in an old piano technician's workshop. He had retired, and asked us

  • if we wanted to come in and see what he had. I found this thing and it's actually

  • one of the more valuable finds, but it has decreased the time it takes to

  • de-tension a piano by almost two hours.

  • Now we're going to remove the strings from the beckets of each pin. The next thing

  • we're actually going to do is we're going to further relieve tension on these

  • strings by cutting them.

  • Now we can safely remove these without any tension on them.

  • All right, now all we have left are the pins.

  • So what we're doing here is we're taking some new German Steinway concert grand

  • hammers, and we are narrowing them.

  • And that's for a couple of purposes:

  • They have to clear each other while the piano is being played, but more importantly

  • we have a certain goal in mind for the end hammer weight based on this

  • particular sound board system, and a lot of that information has been gathered by

  • measuring the weight of hammers on Steinway concert grands that have been

  • made over the last...literally more than a century, and what happens is you

  • come across one that sounds particularly good, and then you find that the

  • hammer weight on that particular piano is maybe surprising; and that allows us to

  • get a very predictable and very good result.

  • Everything that's holding the soundboard in has been removed, and we can

  • begin actually hammering the bottom of the soundboard out; it should pop, it should come

  • out very relatively easy.

  • Once the board is out, we're actually going to semi-reconstruct the old board

  • in order to be able to use that as a template to construct the new board.

  • So, any pieces of ribs that have busted off or broken or are missing, we've got to find

  • them, we've got to re-attach them the best we can.

  • That way, when were measuring lengths and rib taper, we'll have the proper

  • measurements to go by.

  • So let's find some of those.

  • There's an entire rib missing.

  • One of the cool things about Steinway and their pianos is this back structure.

  • What we're seeing is specifically designed to keep the case from moving.

  • Everything about the way these beams are set up, the way they're placed, the way they're

  • attached here in this corner

  • they're designed to absorb motion from the case as it expands and contracts.

  • Serial numbers on most Steinways are found in several places on the action,

  • oftentimes on the bottom of legs, sometimes underneath the lyres.

  • Unless it's been removed by somebody, you'll find it in the corner of the

  • plate right at the horn which in this piano actually has it right there.

  • But visually, this is the only one that you can see without the piano being torn down.

  • So this is a Steinway plate.

  • This came out of the Steinway D we're working on. This item serves a general

  • function of holding the strings in place, but the design of the plate is very important.

  • With the strings, what we'll do is, they're attached to a pin that sits through the

  • plate at one end, it comes through things called A-graphs; the string will then

  • come across the soundboard, go up to the bridge, and then back down to the plate

  • around a hitch pin, and then back across the bridge through an A-graph and into another pin.

  • Where it terminates on the plate and where it terminates on the bridge

  • creates the speaking length, plus the tension on the strings creates the pitch that

  • you want for each individual note. What we are doing here is we are shaping the

  • bridge of the piano.

  • The bridge will set the exact string lengths for each string.

  • What we've done is we've removed wood from the bridge, and the strings come through the notch

  • and they actually begin touching the wood right at the end of the bridge notch.

  • As you can see, there are

  • pins on some of the notches back here. What the string does is, it comes and hits

  • the pin, and if we go over to this piano here you can actually see that

  • where the string will leave the top of the bridge and then have plenty of clearance

  • so that as it vibrates, it does not touch the wood in its speaking length:

  • and the speaking length is the point of terminating on the bridge, to the point

  • of termination at the plate at the A-graph.

  • So we're going to put the action into

  • the newly-strung piano, so what we need to do now is, we need to start off

  • by aligning all the action parts, we need to align all the hammers to the strings

  • and once we align all the hammers to the strings, we start to align everything

  • below the hammers: we align the wippens, which are below, and we align the back

  • checks to the back of the hammers.

  • We also actually have to space just in general the keyboard, the entire thing

  • left and right, in and out, to the correct position: even a millimeter or two of

  • error and the position of the action up here in the treble will have a huge

  • effect on the tone.

  • So let's go ahead and put it in. In we go.

  • That's good, so I'll lock it into place.

  • Let's take a look at the hammer spacing. Looks like everything is relatively

  • close right now, but there's a few up here; that one there I can see needs to go to the

  • left, and I take it

  • loosen the screw, space it to the left

  • put it back in again, make sure it's in the right place, in and out.

  • That one's good now.

  • So now I've got to re-align the wippen to where I put the hammer.

  • This is the same process for all 88 notes. I've got to align the hammer properly.

  • There's a very small tolerance for error.

  • The hammer is only slightly wider than the strings are themselves

  • so if it's spaced even a little to the left, or a little to the right, all three

  • strings and the treble won't hit the hammer, and we'll have a big tone issue

  • because it will only be hitting two strings.

  • So now i have to bend the back check that direction, and square it up; and it's

  • just a little bit off-square, so

  • I'm going to turn it slightly. So what you'll be able to see here is,

  • the player presses the key down at the front, it moves up this little whole part

  • here which moves up this whole part here, at which point it hits, and then it drops

  • back down. You can see this little part here trips out and falls down.

  • So basically what we're going to adjust is, we have to make sure that the

  • jack here, which is what this is called, is aligned properly with there, and then it

  • slips out at the proper moment, which is just the last second. And then we also

  • have to make sure that it drops down a little bit, because otherwise the pianist

  • won't be able to feel properly.

  • It's one of the most sensitive adjustments in the piano in terms of tone, because it

  • really controls whether the pianist can play softly.

  • The effect I'm looking to achieve is this one here, which is I can play

  • softly at the bottom of the key, and I get that nice soft sound; it's soft but it's

  • not muted. See, this one here

  • I don't get quite the same sound with the same touch, so I'm going to adjust that one closer.

  • There we go.

  • So when the piano is first strung up, it's not yet in a musical pitch, so the first thing we do is just go

  • over the entire piano and pull it up to a musical pitch.

  • I think the difference we're going to hear is, I think the whole piano is

  • just going to be a little more live.

  • The newer wood, it's more spring-like. The soundboard is basically a big spring

  • that reflects sound, and in this case effectively what happened is, thousands

  • of pounds of pressure pushing down had basically crushed the board into a more

  • flat position. One of the terms we use a lot is "capping out": how soon does the

  • tone cap out? If you push hard on a note in the treble, how does it cap out?

  • That's what this one was doing previously: you'd hit the treble, and it

  • just wouldn't go anywhere; it was a little bit plinky; "plink" as supposed to "ping."

  • It's not really a technical term, but I mean, it's odd because we use "fuzzy"

  • mellow, soft, you know, it's all these things where you're talking about

  • sound, but you're using terms that people use to define all sorts of other things like

  • light. It sort of creates this environment where you're not sure

  • how to how to describe what you're hearing.

  • It's hard to say what exactly is the sound i created.

  • There are so many different things in each piano that affect one part of the sound:

  • it's hard to say what exactly you did. But it is definitely a fulfilling thing to

  • hear the piano when it is done

  • Because you know if you did mess up certain things, that the tone would not

  • be any good in certain ways.

  • So if the piano sounds right, you know you did it right; let's put it that way.

  • One, two, and three!

  • So, why go through all this fuss?

  • It's a good question in this day and age. But it's important that a great concert

  • series has a great instrument, in the same way that you go to The Phillips

  • Collection and you look at one of their magnificent paintings: that painting has

  • to be illuminated a certain way.

  • If you just had some fluorescent lighting around that painting,

  • you wouldn't really be getting the gist of what that painter was trying to

  • express. In much the same way, if the piano is sufficiently expressive and has

  • enough range and enough beauty and enough of a tonal palette,

  • it allows the pianist to really get to the heart of what Beethoven was trying

  • to say, to get to the heart of what Chopin was trying to say, to get to the

  • heart of what

  • Schubert or Rachmaninoff or Liszt were trying to say

  • and for the audience, that gives them a deeper experience. For the people who

  • attend concerts like this,

  • that's critically important. Of course, the composer is the most important, and

  • the pianist is the second most important;

  • actually, you could argue and say that the audience member is the most important

  • but without a great instrument

  • what the composer worked so desperately hard to say, and what the pianist is

  • interpreting for the deep musical experience of the audience, it would get

  • lost, or it would be lessened if the instrument is not a great instrument.

  • The better the instrument is, the deeper the experience the audience will have

  • and the better the pianist plays.

A few months ago, when I received a call from Caroline Mousset who is the

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シチカ|ピアノ・ドキュメンタリー (SITKA | a piano documentary)

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    songwen8778 に公開 2021 年 01 月 14 日
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