"Humperdinck's deceptively easy going style and casually elegant good looks, a contrast to Tom Jones's energetic attack and overtly sexual style, earned Humperdinck a large following, particularly among women. "Release Me" was followed up by two more hit ballads, "There Goes My Everything" and "The Last Waltz", earning him a reputation as a crooner that he didn't always agree with (Wikipedia).
"If you are not a crooner it's something you don't want to be called. No crooner has the range I have. I can hit notes a bank could not cash. What I am is a contemporary singer, a stylized performer, " remarked the man.
By the 80s, he was performing more than 200 concerts a year and also won a Golden Globe Award for best entertainer of the year in 1989. He has sold more than 130 million records.