How long are songs?
Gabriel Rossman discusses the two peaks, one at just under 3 minutes and one at just under 4 minutes. He quotes musician Jacob Slichter:
In anticipation of “crossing over” the single to radio formats . . . Each mix had to be edited down to under four minutes, an important limit in the mind of radio programmers. (To submit a single with a track length of 4:01 is as foolish as pricing kitchen knives sold on television at $20.01). We pestered Bob Ludwig, the mastering engineer, with a slew of editing adjustments. “Okay, shorten the intro to what it was two verses ago, cut eight bars off the end of the bridge, and undo the cuts we asked you to make to the final chorus.”