Mr. Koiter has tuned pianos for me in the past and done excellent work. This time I had him come to tune and repair a harpsichord that I had in storage for 5 years. He came and tuned it and repaired the broken strings. He also gave me the name of a tuning app as harpsichords are like guitars and need to be tuned often. His knowledge of how to care for my instrument was amazing! He was professional and on time and his charge was very reasonable. Thank you Mr. Koiter for giving me more music in my life!