What if you have a story that’s really complicated, and you have 546 tapes to listen to, and you get obsessed and don’t know where to stop? All of those things were true for “Two Years with Franz.” The “Two Years” refers to two years of tapes recorded by the Pulitzer-winning poet Franz Wright before his death, and then, the two years Bianca Giaever spent listening to them. This is a story of art and love, of madness and beauty, of youth and age and death. Listen Sunday, April 12 at 7 p.m. on WRVO, on-air and online.