The Cello is one of the bass voices of the stringed instrument family which includes the violin, viola, cello and double bass. The double bass is the lowest-pitched instrument of the orchestra, sounding an octave in pitch lower than the cello.
The cello\'s proportions resemble those of the violin, except players hold its body between their legs and its weight is supported by an endpin that touches the floor. It has four strings, tuned an octave below those of the viola.
The cello has a warm and rich "singing" quality of tone which is said to most resemble the human voice.