The 44-year-old Ryder Cup player who now lives in Florida delivered a feast of birdies for the enthusiastic galleries as he fired his lowest score at Gut Lrchenhof for a two-round total of 13-under 131 in a tournament he has already won three times.
Langer leads by two from a trio of players, Australian Stephen Leaney, Swedens Fredrik Jacobson and first-round leader Greg Owen of England. Leaney and Jacobson fed off each other, both shooting 66s for 133, while Owen added a 68 to his opening 65.
Meanwhile, American John Daly backed up an opening-round 71 with a Day 2 67 to move to 6-under for the tournament, seven shots back.
It was an irresistible display by Langer, who has the dual role this week of performer and co-promoter with his brother, Erwin. Despite the off-course distractions, the resilient German focused on his golf game and picked up eight birdies, five of them coming between the first and sixth holes.
Despite a stiff back which necessitated regular stretching exercises on the course, Langer made good progress through the field after starting the day two shots behind. He said, 'I hit a lot of greens and gave myself chances for birdies and the greens were very good. It was just a matter of reading them correctly and getting the right pace. I believe it's my lowest round here.
'My back was hurting a little bit, my lower right back. I was stretching several times on the course to make sure my posture was good but it didn't affect me to the point where I couldn't swing and couldn't play.
'The key is to hit the fairway because the rough is wet and long enough to hurt you when you hit in there.'
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