U.D.O. Rejoined By Guitarist STEFAN KAUFMANN For Summer Festival Appearances

Guitarist Stefan Kaufmann has rejoined U.D.O. — the German metal band led by former ACCEPT frontman Udo Dirkschneider — for the group's summer festival appearances.

Says U.D.O. in a statement: "We are very proud and happy that Stefan is going to be with us during the festival period 2018. But again, Stefan's (re)appearance with the band is only temporary. The name of the new permanent guitarist who will join us after the summer will be announced soon."

Kaufmann left U.D.O. in September 2012 for health reasons.

He was the drummer for ACCEPT on nine albums but was forced to give up drumming towards the end of the band's initial run after sustaining a serious injury to his back.

Stefan joined U.D.O. as a guitar player in 1996, following ACCEPT's second breakup, and recorded nine albums with them, including his most recent release with the group, 2011's "Rev-Raptor".

Dirkschneider told Powerline in a 2013 interview that Kaufmann "had problems with his back" toward the end of his run with U.D.O. "When we did the 'Rev-Raptor' album, we had to stop for three months," he said. "He couldn't move. And that was a really bad thing. We were already thinking at this time maybe it's better to stop being on tour with us. He said no and then he was fine after awhile but then the real problem came up on tour. He had to take really heavy pills. You could kill an elephant with those, you know, and he could not really move on stage. Always, you know, he had so much pain, I know it. He was really never showing this but if you're so long together with somebody, you know what's going on. If you have always pain, then you're not always in a good mood, you know. He started shouting, he was always in a bad mood and the whole atmosphere was going down in the band, and that was also another thing. Then I said, 'After the 'Rev-Raptor' tour, Stefan, I think we better stop.' And then he said in the end to me, 'You are right.'"

Guitarist Bill Hudson exited U.D.O. and DIRKSCHNEIDER in April "due to a difference in their individual visions for the future," according to a statement released by Udo. The statement added that there was no "negative feelings on either side."

U.D.O.'s follow-up to 2015's "Decadent" album is tentatively due in August.

Dirkschneider has spent the last two years touring under the DIRKSCHNEIDER banner. The trek, which was originally supposed to conclude with the band's North American run in January/February 2017, has now been extended through the fall of 2018.

In addition to Udo and his son Sven (drums),the DIRKSCHNEIDER and U.D.O. bands include bassist Fitty Wienhold and guitarist Andrey Smirnov.

DIRKSCHNEIDER released "Live - Back To The Roots - Accepted!" last August as a DVD/2CD, Blu-ray/2CD and gatefold triple vinyl in two different colors.