B♭ tuba with 3 or 4 valves: every note and the valves to press, with the usual alternatives.
B0*
C1
D♭1
D1
E♭1or 1+4
E1or 1+2+3
F1or 1+3
G♭1
G1or 3
A♭1
A1
B♭1
B1or 1+2+3
C2or 1+3
D♭2
D2or 3
E♭2
E2
F2
G♭2
G2or 3
A♭2
A2
B♭2
B2or 3
C3
D♭3
D3
E♭3
E3
F3
G♭3
G3or 3
A♭3
A3
B♭3
B3or 3or 2
C4or 0
D♭4
D4
E♭4
E4
F4
* Needs a compensating tuba or a 5th valve.