Piano is not a string instrument. Developers are severely limited in knowledge, making the app a waste of time.
TangibleFun
Monday, April 15, 2019
In the development of this application we had the collaboration of musicians and music teachers. The piano is considered a string instrument with a keyboard, similar to the harpsichord. Some authors also include it as percussion, because it is a 'struck' string, but the classification as a string instrument is correct.