Jack hit the high note

If you're going to watch this video, just know that it's a bit long and the punch line doesn't come until the end.  

Jack was talking on the phone with my dad and was going on and on, so I decided to pull out my camera to record their chat.  I've never heard him try to really sing before, so I'm so glad I caught it on tape.  He hits his high note around 1:18.  Enjoy