Frequently Asked Questions

The following questions and answers are adapted from the Piano Technicians Guild of the USA website. For more information visit http://www.ptg.org/resources-pianoOwners.php#Bulletins

Some other usefule sites for information are:

http://www.pianobook.com/pianobook.shtml

http://bluebookofpianos.com/pianoall.htm

Because your piano contains materials such as wood and felt, it is subject to change with climatic conditions. Extreme swings from hot to cold or dry to wet cause its materials to swell and contract, affecting tone, pitch, and action response or touch. You can reduce the severity of these effects by placing your piano near a wall away from windows or doors that are opened frequently. Avoid heating and air conditioning vents, fireplaces and areas which receive direct sunlight. Your piano will perform best under consistent conditions neither too wet nor dry, optimally at a temperature of 68 degrees F and 42 percent relative humidity.

How often should I tune my piano?

Most piano manufacturers recommend tuning at least twice a year. No matter how expertly a piano is tuned, atmospheric variations and the nature of the piano's construction constantly conspire to bring it off pitch. You are the final judge and should have the piano tuned as often as you think necessary. To put the matter of tuning into perspective, remember that a concert piano is tuned before every performance, and a piano in a professional recording studio, where it is in constant use, is tuned three or four times each week as a matter of course. The combined tension of the strings in a grand piano can exceed 20 tons, which is why pitch will lower after a period of neglect.

How does humidity level affect my piano's tuning?

Swelling and shrinking of the piano's soundboard is the most immediate and noticeable effect of humidity change. The soundboard, a sheet of wood approximately 3/8 of an inch thick, is made with a slightly crowned shape. The strings pass over the soundboard and are connected to it by a wooden piece called a bridge. The upward crown of the soundboard presses the bridge tightly against the strings.

As the moisture level in the soundboard increases during periods of high relative humidity, the crown expands and pushes the bridge harder against the strings. The strings are stretched tighter and the piano's pitch rises. Because this increase in crown is greater in the center of the soundboard than at the edges, the pitch rises more in the middle octaves than in the bass or treble registers.

During periods of low relative humidity the soundboard shrinks, reducing the crown and decreasing pressure against the strings. The pitch drops, again with the greatest effect noticeable in the center of the keyboard. When relative humidity returns to its previous level, the average pitch of all the strings will return to normal, although the exact pitch of individual strings will be slightly changed from their original settings. Thus, a piano only will stay in tune as long as the relative humidity level in the air surrounding the soundboard remains constant. Extreme humidity changes require making greater changes in string tension to bring the piano into tune. This upsets the equilibrium between the string tension and the piano frame, and the piano never becomes stable.

What is regulation and how do I tell if my piano needs it? 

While tuning corrects the pitch of your piano, it is only one component of a complete maintenance program. Regulation attends to the touch and uniform responsiveness of your action, all vital to making each performance pleasurable. In addition, regulation ensures that your instrument is capable of producing a wide dynamic range, particularly in pianissimo passages.

Music is one of the most complex vehicles for expression. Its beauty is reliant upon personal dynamics and tempi. These changes require extremely fine adjustments to respond to the pianist's nuances and subtle shadings. A smooth, even response throughout the entire range of the keyboard and an extremely quick action capable of playing rapid passages and repeated notes evenly is essential. Outstanding response is essential for a pianist to create an outstanding performance.

If your instrument displays a lack of sensitivity or a decreased dynamic ranges, it's a candidate for regulation. If you notice that the keys are not level (some higher or lower than the rest), the touch is uneven or that the keys are sticking, the need for regulation is indicated. However, a sluggish action or deep grooves in the hammers indicate the need for reconditioning or repair.

No amount of practice can compensate for a poorly maintained action. Poor legato touch, chord playing where all notes of the chord don't speak clearly, a gradual loss of subtlety in phrasing and an inability to execute quick passages or note repetitions evenly may be the fault of the piano -- not the player.

What is good tone?

Tone varies, even among pianos of the same make and model. No matter what its size or cost, any good piano should provide a wide range of tone, from soft and sweet to loud and bright. The tone should be even from the lowest to the highest notes. Most of all, it should sound musical.

What does the perfect piano tone sound like? There is no single answer, because everyone's taste varies. Also, certain tonal characteristics are more suited to specific styles of music. A bright, lively tone might be best for jazz, whereas you might prefer a rich and dark sound for Beethoven's music. There are many different sizes and models of piano available in the market place; you chose your piano because it sounded good to you.

But a piano's tone changes with use. As the hammers wear and compact, the tone often becomes too bright and harsh, robbing the pianist of the ability to produce a sweet sound. As parts wear, the regulation (adjustment of the mechanical parts that transmit motion from the fingers to the hammers) becomes uneven, and the pianist loses control over volume and tone. This is most noticeable in quiet playing. A delicate pianissimo passage becomes very difficult or impossible to play, and some keys may not sound at all if played very lightly.

Aging of the piano's strings and structure also can diminish its tone.

Other factors that affect the sound you hear from your piano are:  

• ROOM ACOUSTICS -- Hard shiny surfaces such as windows and bare floors reflect high frequencies, making a piano sound bright and loud. High ceilings or large adjoining rooms add resonance. Rugs and upholstered furniture soften tone and add warmth.

• THE LID -- Both grands and verticals sound louder and brighter if the lid is opened.

• YOU -- Your ears are sensitive, and will perceive sound differently if you have spent all day in a quiet office or at a loud construction site.

Does my piano need voicing?

Your piano may benefit from voicing if:

• Your piano sounds different than when you purchased it.

• You don't like the sound even after it has been tuned.

• Tone varies radically from note to note.

• You cannot achieve a range of tone (mellow to bright) at different volumes.

• The piano has lost its ability to play softly.

Before deciding if a new piano needs voicing, make sure it is well-tuned and well-regulated. Then, play a wide variety of music on it. Most voicing procedures are long-lasting, so give yourself some time to explore the sound of a new instrument before deciding to change it.

How often voicing is needed depends upon the piano's usage and its intended audience. Pianos in concert halls and recording studios often receive minor refinement of the voicing before each performance. A home piano may need some initial voicing to customize it to the owner's taste, then a touch-up at every tuning to maintain its tone.

Caring for the case of the piano

Your piano's cabinet, like all woodwork, is subject to expansion and contraction with humidity changes. Excessive wood movement can eventually cause the finish to develop tiny cracks and even separate from the wood. Moderating the temperature and humidity swings around the piano will help to preserve its finish as well as its overall structure and tuning stability.

Locate the piano in a room with a fairly even temperature, away from drafts, dampness, and heat sources. ALWAYS AVOID DIRECT SUNLIGHT -- it will age the finish prematurely and cause color fading.

To prevent scratches, never set objects on your piano without a soft cloth or felt pad. Never place plants or drinks on a piano, because spillage and condensation can cause major damage.

Dusting your piano

Dust is very abrasive, and can scratch the finish if wiped off with a dry cloth. To avoid scratching, dust the piano lightly with a feather duster. Alternatively, wipe lightly with a soft damp cloth to pick up the dust, followed immediately with a dry cloth. The cloths should be soft cotton such as flannel, because coarse or synthetic fabrics can scratch some finishes. Wring out the damp cloth thoroughly so it leaves no visible moisture on the surface.

To avoid creating swirl marks, always wipe with long straight strokes rather than circular motions. Wipe with the grain for natural wood finishes, or in the direction of the existing sheen pattern for solid-color satin finishes.

Because some exposed parts inside your piano are fragile, it's best to let your technician clean these areas.

Cleaning the finish.

To remove smudges and fingerprints, first dust using the damp/dry cloths as above. If heavier cleaning is necessary, dampen your cloth with a small amount of mild soap solution.

To polish or not?

Before using polish on your piano, be sure it is actually necessary and beneficial. In general, most manufacturers recommend against using polishes because of the potential for damage to the finish and contamination of other parts of the instrument.

Common household products such as "lemon oil" or inexpensive "furniture polish" should be avoided. Despite the labels' claims that they "protect" the finish or "feed" the wood, they offer no protection from scratching and can actually soften the finish if over-used. Worse, they often contain silicones and oils that contaminate the wood, complicating future refinishing or repairs. Silicone is especially dangerous because of its tendency to spread within the piano, sometimes causing extensive internal damage. Avoid aerosol products altogether since the over-spray can contaminate piano strings, tuning pins and action parts.

An appropriate polish can help to restore luster to a dulled finish or reduce the tendency of some finishes to show fingerprints. However, it should be applied sparingly and infrequently, and all excess should be wiped clean with a soft dry cloth so no visible film remains. To prevent scratching, always dust before polishing. Specific recommendations follow.

• Locate your piano to avoid direct sunlight as well as excessive temperature and humidity changes.

• To avoid scratching, always remove dust first with a damp cloth or feather duster before wiping with a dry cloth.

• Never place drinks, plants, etc. on the finish.

• Avoid placing vinyl or rubber in contact with the piano.

• Make sure that piano lamps, etc. have a felt-padded base.

• Avoid touching piano strings with fingers or damp cloths.

• Delicate parts inside your piano should be cleaned only by your technician.

• Use polish sparingly, if at all.

• Avoid aerosol products.

• Read labels carefully, and avoid any product containing silicone.

• Before playing, always wash your hands to prevent staining the sides and tops of the keys.

Your piano is made primarily of wood, a versatile and beautiful material ideal for piano construction. However, being made of wood, your piano is greatly affected by humidity. Seasonal and even daily changes in humidity cause wood parts to swell and shrink, affecting tuning stability and touch. Extreme swings in humidity can eventually cause wood to crack and glue joints to fail.

Other materials in your piano also are affected by changes in moisture content in the air. The many felt and leather parts in your piano's action can change dimension, affecting regulation and friction, or stiffness of the touch. Very high humidity can even create condensation on metal parts such as strings, tuning pins and hardware, eventually causing them to rust.