1. Except for the A clarinet and the uncommon A ♭ sopranino instrument, the Clarinets in standard repertoire are pitched in B ♭ or the related E ♭.Except for the saxophone, the other commonly-used woodwind instruments (flute, oboe, English horn, bassoon) are in C (the English horn in F).However, B ♭ instruments are commonly found in the brass family.