  As an application of the completely general, ideal two-fluid analysis of
waves in a warm ion-electron plasma, where six unique wave pair labels (S, A,
F, M, O, and X) were identified, we here connect to the vast body of literature
on whistler waves. We show that all six mode pairs can demonstrate whistling
behaviour, when we allow for whistling of both descending and ascending
frequency types, and when we study the more general case of oblique propagation
to the background magnetic field. We show how the general theory recovers all
known approximate group speed expressions for both classical whistlers and ion
cyclotron whistlers, which we here extend to include ion contributions and
deviations from parallel propagation. At oblique angles and at perpendicular
propagation, whistlers are investigated using exact numerical evaluations of
the two-fluid dispersion relation and their group speeds under Earth's
magnetosphere conditions. This approach allows for a complete overview of all
whistling behaviour and we quantify the typical frequency ranges where they
must be observable. We use the generality of the theory to show that pair
plasmas in pulsar magnetospheres also feature whistling behaviour, although not
of the classical type at parallel propagation. Whistling of the high frequency
modes is discussed as well, and we give the extension of the Appleton-Hartree
relation for cold plasmas, to include the effect of a non-zero thermal electron
velocity. We use it to quantify the Faraday rotation effect at all angles, and
compare its predictions between the cold and warm Appleton-Hartree equation.
