E-flat clarinet

The E-flat (E♭) clarinet is a member of the clarinet family, smaller than the more common B♭ clarinet and pitched a perfect fourth higher. It is typically considered the sopranino or piccolo member of the clarinet family and is a transposing instrument in E♭ with a sounding pitch a minor third higher than written. The E-flat clarinet has a total length of about 49 centimetres (19 in).

In Italian, the term quartino refers specifically to the E♭ clarinet, particularly in band scores. The term terzino is also used, referring more generally to any small clarinet; in Italian scores, the E♭ clarinet is sometimes indicated as terzino in Mi♭, e.g. the Fantasia Eroica op. 33 (1913) by Francesco Paolo Neglia. Until the late nineteenth century, the term Elafà also indicated a clarinet in E♭.

The E♭ clarinet is used in orchestras, concert bands, and marching bands, and plays a central role in clarinet choirs, carrying melodies that would be uncomfortably high for the B♭ clarinet. Solo repertoire is limited, but composers from Berlioz to Mahler have used it extensively as a solo instrument in orchestral contexts.