Although there is a large number of Applications in the music area, hardly one concentrates on training sight-reading and tempo play on your acoustic instrument based on sheet music. Especially for professional musicians, music students, advanced hobby musicians and all who are used to work with sheet music it is difficult to find exercising applications running on a tablet.

Clef contains two main exercising functions, sight-reading and tempo play. To use the App users does not need to have their instruments plugged in. When starting to play (or sing) a selected piece, the App will recognize it and where on the notes you are at what time. In the sight-reading and tempo play mode notes are by default displayed as a continuous passing through note system, so turning pages is not necessary. If desired, they can also be displayed as classical sheet music. After exercising you can see an analysis of mistakes you have done, whether you played wrong notes or which parts were not played in the selected tempo. Additionally the App provides a music library. Selected pieces can be just listened to in different sounds and joint music sessions can be simulated.