Sure. Here is a longer version of my last answer, without repeating myself:
There is only one 9-letter word in the Dutch language for the word “pianostemmer”. It is “klavierstemmer”.
The word “klavierstemmer” is a compound word made up of the words “klavier” (keyboard) and “stemmer” (tuner). It literally means “keyboard tuner”.
Klavierstemmers are responsible for tuning and maintaining pianos. They use a variety of tools and techniques to adjust the tension of the piano’s strings so that they produce the correct pitch. Klavierstemmers also need to have a good understanding of the mechanics of the piano in order to identify and fix any problems that may arise.
Klavierstemmers play an important role in the music industry. They help to ensure that pianos sound their best, which is essential for both professional and amateur musicians.
I hope this is more informative!