Whether you are using the most expensive brand or the cheapest brand, they will all be subject to strings breaking in the top two sections of the piano under certain conditions. This is due to the strings passing under the metal frame of the top two sections which is called the Capo Bar. This V shaped bar (on the underside) cuts into the strings if the piano receives hard playing. The bar gets cut through wear and tear and every so often needs the strings to be removed and the bar sanded smooth. After this attention, the new strings will provide a better sound quality.
A piano being used in a College of Music receiving constant professional use will very quickly cut into the strings causing breakage. A Concert Hall will also have the same problems but will take a little longer.
Once the strings have been replaced the bright, often unpleasant, buzzing noises in the treble will be silenced.
It takes around six hours to change the strings followed by two or possibly three tunings. If the hammers are well worn, this will accelerate the wear on the strings. Therefore this is a good reason to keep hammers in good shaped condition. Two tunings a year, without simple maintenance, simply speeds up the overall wear and tear on the whole action and keys.
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