STEPHEN PEARCY Was 'Stumbling' And 'Couldn't Remember The Words' During RATT's Concert In St. Charles (Video)

Some of the fans who attended RATT's concert Friday night (October 5) in St. Charles, Illinois say that lead singer Stephen Pearcy was "stumbling" and couldn't "remember the words" to many of the band's most popular songs.

Fan-filmed video footage of RATT's performance at the Arcada Theatre — courtesy of YouTube user JW Stuff — shows the frontman slurring his way through the set and struggling to hit the notes in the group's biggest hits.

Michael Hlavin tweeted: "Went to the @ArcadaTheatre to see RATT. Band was awesome especially Jason on lead guitar as they tried to cover for Stephen Pearcy. Complete Poser - drunk, drugged out, stumbling and can't remember the words. Kept walking off stage or sitting on drum riser. What a joke!! #rehab"

Another fan posted a short video clip of the concert and wrote about Pearcy: "Trashed again on stage 10/5 getting BOOED!"

The Arcada Theatre performance took place just over a week after RATT's disastrous show in Huntington, New York, where Pearcy was also slurring while sitting down and nearly lying down on the drum riser. The 62-year-old singer also appeared to be slouching or leaning on to the bass drum during "Round And Round" and holding on to the tom-tom stand and bass drum to keep from falling over.

Pearcy later apologized to the RATT fans, saying in a statement that he was "dealing with a pain-management issue due to a bad knee that is scheduled to be replaced in January." He added that he "made the critical error of adding alcohol to my pain meds while on stage" at the Huntington concert "and it destroyed my performance."

Croucier and Pearcy are the sole remaining original members in RATT's current incarnation, which also includes drummer Pete Holmes (BLACK 'N BLUE) and guitarists Jordan Ziff (RAZER) and Chris Sanders (BRITNY FOX, KNIGHT FURY).

This past summer, Pearcy said that Warren DeMartini "didn't wanna go out there" and play shows with RATT, leading to the guitarist's departure from the group. "We wanted to clean house, and that's it, and go out and enjoy ourselves for once," he added. 'Enough drama. We've been through enough."

He continued: "It's very simple — you either like what you're doing or you don't," he said. "And we do. But it has to be with the right people. It's not like we need to hire Jimmy Page or somebody. We're gonna work with people that we have a great time with."

Pressed about the specific issues that Warren and other two members of RATT's classic lineup couldn't agree on, Stephen said: "I can't speak for the guy… The guy didn't wanna go out there. I wouldn't even call it work. We're privileged enough, 35 years later, to be able to go out and do what we do. And there's still a lot of great fans out there who'd love to hear the music. That's all that concerns me. So if somebody else doesn't wanna do it in the band, regardless [of whether it's Warren] or somebody else, [they can] take a hike."

RATT's new lineup made its live debut on July 7 in Mulvane, Kansas.