What noise does a tuba make?
Tuba players create the low-pitched sound by making a kind of "buzz" with their breath against the mouthpiece and pressing the tuba's valves to form notes.
What is the lowest note on tuba?
The lowest pitched tubas are the contrabass tubas, pitched in C or B♭, referred to as CC and BB♭ tubas respectively, based on a traditional distortion of a now-obsolete octave naming convention. The fundamental pitch of a CC tuba is 32 Hz, and for a BB♭ tuba, 29 Hz.