Bulletin Today | EntertainmentThe Grammy telecast has become a place where musicians who might never have even met get to play together in unique combinations. This year saw Elton John singing with Ed Sheeran, and the Black Keys joining up with Dr. John and the Preservation Hall Jazz Band in a nod to next week’s Mardi Gras festivities. Watch our 2013 Grammy Awards Showcase Given the assignment to watch the telecast Sunday, I wasn’t just on the “old people watch” (There’s Chick Corea! …