from abjad.tools.construct._construct_tied_note import _construct_tied_note

def _construct_unprolated_notes(pitches, durations, direction='big-endian'):
   '''Private helper returns a list of unprolated notes.'''
   assert len(pitches) == len(durations)
   result = [ ]
   for pitch, dur in zip(pitches, durations):
      result.extend(_construct_tied_note(pitch, dur, direction))
   return result


