Tom Jones has a wide range of voice which allows him double high C. Here are a few samples of high notes and low notes he sang, together with Pavarotti's high C, with which he was called "King of High C". Please enjoy!
singing low notes in "In Dreams"
Low Notes 33" (414K)
from "I Know" (low C)
singing high D in "I've Been Loving You Too Long"
High Notes 40" (535K)
from "Till" (G)