During the 1600s the cello was used as common solo instrument. It is larger than the violin, 4 feet lone and 1.5 feet across. Producing deep, rich tones, the cello has four strings that create sound that is an octave lower than the viola. The size causes the cello to be the second largest viol instrument. The cello is placed on the floor and rests against the players knees. The first cellos were created in Cremona, Italy in the 1500’s.