Early 1500s, Spinet
Almost identical in construction to the oblong virginal and the harpsichord, the spinet, or bentside spinet, was thought to have gained popularity in the early 16th century and lasted for roughly a hundred years before being supplanted for the most part by the piano-forte.
A triangular shaped, jack-action keyboard instrument, wherein strings run transversely, at a 30 degree angle to the keyboard, moving toward the right and crossing a bent bridge to alter their resonance.
Bartolomeo Cristofori (1655-1731) would later create a larger version, called the spinettone, expanding the range of sound with multiple choirs of paired strings.