Former Grand Funk Railroad singer-guitarist Mark Farner was fitted with a pacemaker on Monday.

His wife Lesia writes on his website, "He was diagnosed eight or so years ago with a bundle branch block. They said eventually he would need a pacemaker. Well that time has come... They put a temporary pacemaker in and they have to do some tweaking to that pacemaker to keep up with the hard-rocking Mark Farner pace! He is recovering well, in good spirits and still has that since of humor about him."

Farner is 64.

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