var plusIntervalInKey = function (key, startPitch, intervalSize) {
  var keyInfo = key.split(/\s+/)
  var keySignature = new Key(keyInfo[0], keyInfo[1])

  if (arguments.length === 2) {
    return function (intervalSize) {
      return keySignature.plusInterval(startPitch, intervalSize).sciPitch()
    }
  }
  return keySignature.plusInterval(startPitch, intervalSize).sciPitch()
}
 return function (intervalSize) {
   return keySignature.plusInterval(startPitch, intervalSize).sciPitch()
 }