How was the voice of the Welsh singer referenced in The King of Rock and Roll described?
The King of Rock and Roll:  The title track, a mock braggadocio that referenced Tom Jones, Elvis Presley, Ike & Tina Turner, Sly and the Family Stone, and Aretha Franklin, amongst others, upset some fans, although the album's title tune got good airplay in New York - a 1950s style jump blues, with an exceptional Little Richard shouting vocal! Tom Jones (singer):  Jones's powerful voice has been described as a "full-throated, robust baritone".
full-throated, robust baritone