A group of different clarinets. In order from left to right: bass clarinet, E♭alto clarinet, soprano clarinets in C, B♭, A, E♭, and D, and clarinets in high and low G.Different instruments of the clarinet family (German system) played by Tribal Clarinet Trio. Left to right: deep G clarinet (Theo Jörgensmann), contrabass clarinet (Ernst Ulrich Deuker), basset horn (Etienne Rolin).The deepest tones (sounding) of all members of the clarinet family.
Clarinets, other than the standard B♭ and A clarinets, are sometimes known as harmony clarinets. There are many differently pitched clarinet types that may be grouped into sub-families, but grouping and terminology vary; the list below reflects popular usage.