You know when you’re at a wedding reception and someone coaxes a guest to sing with the band?  Sometimes it’s a precocious tyke; sometimes a college roommate; and sometimes an elderly aunt who personally knew Keely Smith.  Last week, it was Jon Bon Jovi.  The rocker was attending a wedding in Key Biscayne when the band began to play “Livin’ on a Prayer”.  Well, the word “band” is probably misleading.  It consisted of a string bass, synthesizer, trumpet, drums, and guitar – and they sounded exactly as you’d expect a wedding band to sound…with just a hint of mariachi.  Singer Lourdes Valentin knew Bon Jovi would be in attendance, so she prepared the song especially for him.  However, he made it clear that he would not sing.  That didn’t stop Lourdes from walking over to him and getting the crowd to cheer.  Put on the spot, Jon sheepishly joined her.  Alas, the band was playing in a key higher than he sings it in, but he did the best he could under the circumstances, as you’ll see on BillyMasters.com.