Summary: The literal meaning of the Italian word spiccato is similar to that of staccato —“detached,” or “distinct.” In string playing, to play notes spiccato means to play them with a bouncing bow. With its stiff but flexible stick and tightened horsehair, the bow is like a long spring, so it wants to bounce. But spiccato involves a controlled bouncing. The bow comes off the string after each note, but the player has to find the balance between making the bow bounce and letting it bounce.
