If you’re a fan of John Waite, he’ll be performing tonight down at the Kent Stage. Doors are at 7 and the show is at 8. Or you can head down to Playhouse Square to see Hershey Felder as Irving Berlin. The story of American composer Irving Berlin comes to life through some of his most enduring songs. There’s two shows today: one at 2:30 and the other at 7:30 inside the Allen Theater.