"Fisrt of all, Eartha Kitt has a voice which is her own, her very own signature; it
can be imitated, which is good, but never duplicated, which is better.
"The voice has a carefully developed feline feeling, also exceptionally useful for
suggesting more than customarily meets the ear when any singer displays tonsils for
pay. The voice itself has a clearly discernible vibrato which is part of its high
recognizability quotient; once you've heard it you hardly may mistake it for anyone
else's. Its vibrati is not so broad as to suggest a musical shortcoming, as aging
larynxes on the part of operatic soloists have a habit of doing. Its vibrati run so tightly
together that it becomes a clear help instead of an artistic hindrance. Eartha projects it
with agreat deal of mood whithin its vibrating limitations, if there are actually any
limitations to her attitude, which also is part of the plot for success".
Jack O'Brian, "Down to Eartha" (1955)