Eb and C Clarinets

The E-flat (E♭) clarinet is typically considered the sopranino or piccolo member of the clarinet family. Smaller in size and higher in pitch (by a perfect fourth) than the more common B♭ clarinet, it is a transposing instrument in E♭, sounding a minor third higher than written.

The E♭ clarinet is used in orchestras, concert bands, marching bands, and plays a particularly central role in clarinet choirs, carrying the high melodies that would be treacherous for the B♭ clarinet. Solo repertoire is limited (source).