A musical instrument with an improved interface for playing the instrument is provided. The musical instrument may be configured with a musical scale and a key. An input interface of the musical instrument may be configured based on the scale and key to allow a player of the instrument to easily play multiple collections of notes, or chords, in a simplified manner. For example, the improved interface allows a user to play a number of chords or other collection of notes without having to depress or engage a number of sound actuators at different locations along instrument.