old_contents: from api.rekognition import Rekognition
  from api.gracenote import Gracenote
  from api.livefans import LiveFans
  from api.petitlyrics import Petitlyrics
  from api.yamaha import Yamaha
  
  
  def convert(image_urls):
      r_ = Rekognition()
      g_ = Gracenote()
      l_ = LiveFans()
      p_ = Petitlyrics()
      y_ = Yamaha()
  
      # analyze moode
      moods = r_.images_to_mood(image_urls)
  
      # choose artists
      artists = l_.get_live_artists(5)
  
      # gracenote api
      # todo: parallel process by mood
      mood = max(moods, key=moods.get)
      tracks = g_.get_artists_mood_tracks(artists, mood)
  
      # get and build lyric
      song = []
      count = 0
      for t in tracks:
          lyrics = p_.track_to_lyrics(t, offset=count, limit=2)
          if len(lyrics) > 0:
              for l in lyrics:
                  song.append(l)
              count += 1
  
      # make mp3 song
      song = song[:4]
      mp3_url = y_.create_song(song)
  
      result = {
          "mp3_url": mp3_url,
          "moods": moods,
          "artists": artists,
          "tracks": tracks,
          "lyric": song
      }
  
      return result
  
new_contents: import re
  from api.rekognition import Rekognition
  from api.gracenote import Gracenote
  from api.livefans import LiveFans
  from api.petitlyrics import Petitlyrics
  from api.yamaha import Yamaha
  
  
  def convert(image_urls):
      r_ = Rekognition()
      g_ = Gracenote()
      l_ = LiveFans()
      p_ = Petitlyrics()
      y_ = Yamaha()
  
      # analyze moode
      # moods = r_.images_to_mood(image_urls)
      moods = {'Easygoing': 1, 'Cool': 1}
  
      # choose artists
      artists = l_.get_live_artists(5)
  
      # gracenote api
      # todo: parallel process by mood
      mood = max(moods, key=moods.get)
      tracks = g_.get_artists_mood_tracks(artists, mood)
  
      # get and build lyric
      song = []
      count = 0
      is_japanese = lambda txt: True if re.search("[ぁ-んァ-ヴ]", txt) else False
      for t in tracks:
          lyrics = p_.track_to_lyrics(t, offset=count)
          if len(lyrics) > 0 and is_japanese("".join(lyrics)):
              for l in lyrics:
                  song.append(l)
              count += 1
  
      # make mp3 song
      song = song[:4]
      mp3_url = y_.create_song(song, mood)
  
      result = {
          "mp3_url": mp3_url,
          "moods": moods,
          "artists": artists,
          "tracks": tracks,
          "lyric": song
      }
  
      return result
  
subject: add check for japanese