Quiet simple solo piano for reportage, documentary, interview, vaguely pulsating underscore, pulsating ambient ambiance, depressed low-key vibrant music bed for a sentimental dark grey day, saddened still nature, calm peaceful water waves etc.
报告文学，纪录片，采访，模糊脉动的配乐，脉冲的环境氛围，低调的low-key充满活力的音乐，感性的深灰色的日子，悲伤的自然，平静宁静的水浪等。