The Four Registers of the Clarinet
Understanding clarinet range and registers
Before diving into the fingering chart, it helps to understand how the clarinet’s range is organised. Unlike the saxophone or flute, which overblow at the octave, the clarinet overblows at the interval of a twelfth — an octave plus a fifth. This means that adding the register key does not simply repeat the same fingering pattern an octave higher. Instead, it produces a note a twelfth above, which is why the clarinet’s upper register fingerings look completely different from the lower register. This quirk of acoustics is what gives the clarinet its uniquely wide range, but it also makes the fingering system more complex to learn.
Chalumeau Register — E3 to B♭4
The lowest register, named after the clarinet’s predecessor instrument. These notes have a warm, dark, woody quality that is unique to the clarinet family. The fingerings are straightforward — you cover more holes to go lower, much like a recorder. This is where beginners start, and a secure chalumeau register is the foundation for everything else.
Throat Tones — E4 to B♭4
The short transition zone around open G, G♯, A, and B♭. These notes use very few fingers and can sound thin or unfocused. Good throat tone production requires careful voicing and air support. The transition from throat tones into the clarion register is known as “crossing the break” — one of the biggest hurdles for developing clarinetists.
Clarion Register — B4 to C6
The bright, singing middle register. Adding the register key (left thumb) to chalumeau fingerings produces notes a twelfth higher. The clarion register is where the clarinet truly shines — orchestral melodies, solos, and lyrical passages live here. Mastering the clarion means developing smooth technique from B above the staff up to high C (two ledger lines above).
Altissimo Register — C♯6 and above
The highest register, beginning above high C. Altissimo fingerings are cross-fingerings and venting combinations that exploit higher harmonics. They require precise embouchure control, fast focused air, and careful voicing. Every clarinet responds slightly differently in this register, so players must experiment to find what works best on their instrument. A detailed guide follows below.



