Editor's Note: First Notes is a weekly update of recent happenings in the world of music.
* Katy Perry will be the halftime headliner at Super Bowl XLIX on Feb. 1, 2015. Rumors had been circulating that the performer would be either Perry, Rihanna or Coldplay. In response to pay-to-play rumors that were also going around, Perry said, "I'm not the kind of girl who would pay to play the Super Bowl."
* The Who will hit the road for a 50th Anniversary tour next year as the "beginning of a long goodbye," guitarist Pete Townshend said. The band's only scheduled North Carolina show is at Raleigh's PNC Arena on April 21, 2015.
* Nine Inch Nails, Green Day and N.W.A. are among the 15 nominees for the Rock and Roll Hall of Fame's 2015 induction. In order to be eligible, a music act had to release its first recording in 1989 or earlier. Among the other nominees are Lou Reed, Sting, The Smiths, Joan Jett and the Blackhearts, Stevie Ray Vaughn and War.