Alto clarinet
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The alto clarinet is a woodwind instrument of the clarinet family. It is a transposing instrument pitched in the key of E♭, though instruments in F have been made. In size it lies between the soprano clarinet and the bass clarinet. It bears a greater resemblance to the bass clarinet in that it typically has a straight body, but a curved neck and bell made of metal. All-metal alto clarinets also exist. In appearance it strongly resembles the basset horn, but usually differs in three respects: it is pitched a whole step lower, it lacks an extended lower range, and it has a wider bore than many basset horns.
Clarinet family
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The clarinet family is a woodwind instrument family of various sizes and types of clarinets, including the common soprano clarinet in B♭ and A, bass clarinet, and sopranino E♭ clarinet.
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 in A♭, E♭, and B♭, basset clarinet in A, alto clarinet, basset horn, two bass clarinets (ranging to low E♭ and low C), contra alto clarinet, and contrabass clarinet.