Shawn ‘Clown’ Crahan from  Slipknot has revealed he needs heart surgery, saying he sometimes “feels like” he is “dying”. READ MORE:  Clown talks Slipknot’s 25 th  anniversary tour and future: “We probably have several albums in us right now” The percussionist, 56, is the Iowa metal band’s sole remaining founding member, and in a recent appearance on Rick Rubin’s  Tetragrammaton  podcast, he opened up about his need for cardio surgery in the near future. He explained (via  ThePRP ): “I have a skipping heart and I got to get a surgery. And I found this out after my last tour. I went in, I wasn’t feeling good, and I went in and the nurse was trying to get an EKG thing going on me or whatever and it just wasn’t happening.” “I kind of fell asleep and I woke up. I’m like, ‘Are you going to get this thing?’ And she’s like, ‘Oh, it’s not working.’ They thought I was having a heart attack right there.…