Out of range · Rules
Each voice sings within its range: soprano C4 to G5, alto G3 to D5, tenor C3 to G4 and bass E2 to C4. Going outside it now and then is not serious, so it is a warning.
- Out of range: Each voice sings within its range: soprano C4 to G5, alto G3 to D5, tenor C3 to G4 and bass E2 to C4. Going outside it now and then is not serious, so it is a warning. (Piston, ch. 2, p. 15)