Keyboard Keyboard allows you to send notes to a device with a virtual keyboard. Desktop Desktop version of the keyboard: 5 octaves are displayed Click on any note to send a note to the synthesizer. Transpose the keyboard by one or two octaves with the dedicated buttons (-24, -12, +12, +24) If a note gets stuck, press it again to stop it Mobile Mobile version of the keyboard only displays one octave: The octave to play can be selected with C1-C8 buttons. C4 is the default. Tapping each note is necessary, sliding between notes has no effect.