The crossword solution for the term 'FIXES, AS A PIANO' is 'TUNES'. Tuning a piano is an important part of maintaining the instrument. It involves adjusting the tension of the strings to ensure that the notes are in tune with each other. This process is done by a professional piano tuner and can take several hours. Tuning a piano regularly helps to keep it sounding its best and ensures that it will last for many years.