(END VIDEO CLIP) INGRAHAM: He’s a combo of the grim reaper and phantom of the opera. What is that. The families of the 58 people killed in the Las Vegas massacre last year are going to be given $27. With references to shows ranging from “Avenue Q” to “Mary Poppins,” with stops at “Fiddler on the Roof,” “Annie” and “Phantom of the Opera,” “Something Rotten” is a love letter to…