Don't know what this song is exactly yet, but in spring 2015, it appeared in the US copyright database as having been written by Beck, Greg Kurstin and Pink.
Pink covered Beck a few years earlier with "Feel Good Time
." Paparazzi caught Beck and his wife going to a Pink concert in 2013 as well.
As of now, 2017, Pink still has not released the song; however, she hasn't released anything since this song was registered in the database, so it could still be in the works.
UPDATE: Looks like it will be on her album, Hurts 2B Human
due on April 26, 2019.