An online cello that sounds like one
Most online instruments are a synthesiser with a picture on top. This one plays recordings of a real cello, so the attack, the tone and the decay are the instrument's own. The cello is often called the instrument closest to the human voice: its range covers the voices of a men's and a women's choir.
A short history of the cello
The cello appeared in Italy in the 16th century as the bass of the violin family. Bach's six Suites for solo cello, written around 1720, were almost forgotten until Pablo Casals recorded them in the 1930s.
From the keyboard to the real instrument
A real cello is written in bass clef (tenor and treble clef up high). The keyboard here plays the sounding notes, so a melody you find by ear is the melody you hear. To go further, the free sheet music and chord pages work with any instrument you can read music on.