Kenny Loggins performed an impromptu set at a wedding in Michigan a few weeks ago.  He was a guest because he knows the bride's dad and he wasn't initially planning to perform.

But the dad twisted Kenny's arm, so he agreed to play a short set, which included 'Footloose'!

There aren't a lot of things that can save a dull, summer wedding . . . but I'd think an open bar and a surprise performance from Kenny Loggins could make ANY wedding tolerable.

(TMZ.com)