The sustain pedal is a component found on many musical instruments, particularly on the piano. When pressed, it allows notes to continue sounding even after the keys are released. This creates a richer, more resonant sound, enabling musicians to play more fluidly and expressively. On digital keyboards and synthesizers, the sustain pedal serves a similar function, often connecting via a cable or wirelessly. It can enhance performances by allowing for smoother transitions between notes and chords, making it an essential tool for both beginners and experienced players alike.