What instruments are in a toccata?

A toccata is primarily a keyboard composition, most commonly written for the organ or piano. It can also be arranged for other instruments or ensembles, but the focus is typically on showcasing the virtuosity and expressiveness of the keyboard instrument. Some toccatas may incorporate additional instruments, like strings or winds, in orchestral settings, but the keyboard remains central. Notable examples include works by composers like Bach and Frescobaldi.