![A look under-the-hood of Simply Piano (Part 1) | by Yoni Tsafir | Simply (formerly JoyTunes) | Medium A look under-the-hood of Simply Piano (Part 1) | by Yoni Tsafir | Simply (formerly JoyTunes) | Medium](https://miro.medium.com/v2/resize:fit:1400/1*MdrH79UsCJYbTbfY7cpE1g.png)
A look under-the-hood of Simply Piano (Part 1) | by Yoni Tsafir | Simply (formerly JoyTunes) | Medium
![London, United Kingdom - October 19, 2018: Screenshot of the Simply Piano by JoyTunes mobile app from JoyTunes icon on an iPhone Stock Photo - Alamy London, United Kingdom - October 19, 2018: Screenshot of the Simply Piano by JoyTunes mobile app from JoyTunes icon on an iPhone Stock Photo - Alamy](https://c8.alamy.com/comp/PX3EW6/london-united-kingdom-october-19-2018-screenshot-of-the-simply-piano-by-joytunes-mobile-app-from-joytunes-icon-on-an-iphone-PX3EW6.jpg)
London, United Kingdom - October 19, 2018: Screenshot of the Simply Piano by JoyTunes mobile app from JoyTunes icon on an iPhone Stock Photo - Alamy
![Learning piano using the simply piano app. I've noticed this in a lot of piano sheets. What does the flat symbols and the 3 and 4 mean? Usually I see them right Learning piano using the simply piano app. I've noticed this in a lot of piano sheets. What does the flat symbols and the 3 and 4 mean? Usually I see them right](https://preview.redd.it/learning-piano-using-the-simply-piano-app-ive-noticed-this-v0-2d2wavc9he7a1.jpg?width=640&crop=smart&auto=webp&s=3a60149a1b7a89297c3ce8a5b261c663e7856847)