"Elvis Presley has been described variously as a baritone and a tenor. An extraordinary compass- the so-called register-, and a very wide range of vocal color have something to do with this divergence of opinion. The voice covers two octaves and a third, from the baritone low-G to the tenor high B, with an upward extension in falsetto to at least a D flat. Presley's best octave is in the middle, D-flat to D-flat, granting an extra full step up or down. Call him a high baritone. In "It's'now or never", (1960), he ends it in a full voice cadence (A, G, F), that has nothing to do with the vocal devices of R&B and Country. That A-note is hit right on the nose, and it is rendered less astonishing only by the number of tracks where he lands easy and accurate B-flats. Moreover, he has not been confined to one type of vocal production. In ballads and country songs he belts out full-voiced high G's and A's that an opera baritone might envy. He is a naturally assimilative stylist with a multiplicity of voices – in fact, Elvis' is an extraordinary voice, or many voices."