HeyJude - FizzBuzz style

HeyJude.swift

var heyJude = ""

for verse in 0..<4 {
  heyJude += "Hey Jude, don't "
  switch verse {
  case 0, 3: heyJude += "make it bad\nTake a sad song and make it better"
  case 1:    heyJude += "be afraid\nYou were made to go out and get her"
  case 2:    heyJude += "let me down\nYou have found her, now go and get her"
  default: fatalError()
  }
  heyJude += "\n"

  heyJude += verse == 1 ? "The minute you " : "Remember to "
  heyJude += "let her "
  heyJude += verse.isMultiple(of: 2) ? "into your heart" : "under your skin"
  heyJude += "\n"

  heyJude += "Then you "
  heyJude += verse.isMultiple(of: 2) ? "can start" : "begin"
  heyJude += " to make it better"
  heyJude += "\n\n"
}

for _ in 0..<18 {
  heyJude += "Na, na, na, na-na-na na\nna-na-na na, hey Jude\n"
}

print(heyJude)