Rick Springfield

The classic tune hit No.1 45 years ago.

Watch the pair perform "I've Done Everything for You" together and check out the first part of UCR's exclusive tour report.

The '80s heartthrob tells UCR how he had a hit, but also, an important assist from the Red Rocker as his success in the music business was exploding.

Hagar treated his adopted hometown of St. Louis to a hit-packed 19-song set.

Springfield had a Top 10 hit with a Hagar-penned song back in 1981.

He's also got big New Year's Eve plans.

UCR has an exclusive look at a new book chronicling the '80s rocker's history onstage.

His father's avoidable death brought a new focus on health issues. He's also recently experimented with ketamine.

Singer recalls how his naivety was exploited by the music industry.

"It's going to be a little heavier," the guitarist tells UCR.