It begins with Bellamy playing a keyboard instrument. They are among the first concertos for keyboard instrument ever written. Many were included to emphasize the keyboard instrument. The Continental is visually striking, with atypical features for a keyboard instrument. Grebenshchikov himself played a small keyboard instrument. However, the principle of bowed strings in a keyboard instrument is old. Included in the collection is a clavicytherium that is the world's oldest surviving keyboard instrument. Despite their visual similarity, different keyboard instrument types require different techniques. Fabio Colonna created the pentecontachordon keyboard instrument which he called a sambuca. Unlike prior keyboard instrument technologies, synthesizer keyboards do not have strings, pipes, or metal tines. A keyboard instrument was introduced with "Rock Band 3". The harpsichord was replaced as the main keyboard instrument by the piano (or fortepiano). The first keyboard instrument he owned was a Crumar Compac electric piano. The Roland E-20 is a keyboard instrument introduced by Roland in 1988. The virginals (or virginal) is a keyboard instrument of the harpsichord family.