U2 performs I Will Follow on the Tomorrow Show and then is Interviewed by Tom Snyder. If you bought the Rona Elliot Interview off of iTunes the last couple of minutes of the interview is on that as well but this is much more complete. As a side note, the ITMS showed the date on this as being June 3rd, the U2 community has noted this as being May 30 though.

U2 perform I Will Follow on the Tom Snyder Show on 06/04/1981.