In many scores, especially in classical scores, we can see small numbers under the notes. These numbers are fingering suggestions for keyboard players.
Most of the time, they were not placed by the authors responsible for the works, but by the person who edited and published them. They are of great help, especially when the intention is to seek speed for the execution of the piece. The numbers are organized as follows:
Fingering notation
The figure below is an example of this numbering in a piano score:
Piano / Keyboard fingering
Go to: Musical Dynamics
Back to: Sheet music guide