バックグラウンドミュージック
Theme music and background music set the overall tone of Japanese drama series. Most dramas will start off with one or two minutes of theme music during the opening credits. Other dramas will have, at the very least a catchy melody in the beginning, displaying the show's name for a few seconds, and then one to two minutes of ending theme music during the closing credits. Background music is placed and used at strategic points of the episode to set the mood.