The first song on the new Tom Jones [ tickets ] album "24 Hours" is the up-tempo "I'm Alive," and with one listen it's clear the iconic singer is just as bombastic as ever.

With a career spanning four decades and counting, 68-year-old Jones is showing no signs of slowing down. Staying true to his signature sound over the years, he has maintained a remarkable equilibrium and a huge, loyal fan base. Through the waxing and waning of mainstream popularity, his steadfastness has paid off; he's reportedly sold 100 million records worldwide.