BB♭ Sousaphone

A2 on the BB♭ Sousaphone

Written A2. Tap the diagram to hear it.

A2
4th partialBeginner note
Written A2 on the bass staff

A2 is the 4th partial with valve 2, 1 semitone below open B♭2. With valve 2 down the tuning is honest, which makes it a useful note to tune against. This is the sousaphone's most comfortable range — where most marching parts live.

About this note

A2 is the 4th partial with valve 2, 1 semitone below open B♭2. With valve 2 down the tuning is honest, which makes it a useful note to tune against. This is the sousaphone's most comfortable range — where most marching parts live.

  • Primary fingering: Valves 2
  • Written pitch: A2
  • Sounding frequency: 110.00 Hz
  • Harmonic partial: 4 — the valves set the tube length, but your air and embouchure select the partial.

Alternate fingerings for A2

  • 1-3: Valves 1 + 3. The same pitch off the 5th partial, used for trills; sharp like every 1-3 fingering.

BB♭ Sousaphone fingering data last updated . Every diagram here, in the printable PDF and in the chart image comes from one dataset, so the paper and the screen cannot disagree.