It is a special mode, aimed at simplifying the process of playing an instrument and learning new scores.
In this mode, Musicians see scores in a "continuous view" shown in one line and horizontal mode with perfect readable scaling applied. To view the score in 'Practice mode' go to the 'Settings' icon at the top right of the score screen. Then switch 'Page Layout' to 'Horizontal' mode and switch 'Landscape view' to 'Single-Line' mode.
Then flip your phone to the landscape position. Musicians can always see what they’re playing, along with a couple of more measures that are coming up next.
On the same screen, clicking on the 'Settings' icon, Musicians not only change the tempo, the key, or turn the metronome on/off but also play the original sound of the instrument (to hear whether they’re playing it correctly), rewind score, and change tempo.
keywords: practice mode, piano score, play score, piano icon