Soprano Clarinets

Some articles on clarinets, clarinet, soprano clarinets:

Piccolo Clarinet
... The piccolo clarinets are members of the clarinet family, smaller and higher pitched than the more familiar high soprano clarinets in E♭ and D ... None are common, but the most often used piccolo clarinet is the A♭ clarinet, sounding a minor seventh higher than the B♭ clarinet ... Some writers call these sopranino clarinets or octave clarinets ...