本曲提供多版本支持，购买后可以获得以下所有的5个版本：
版本 1 02:36版本 2 02:00版本 3 01:14版本 4 00:10版本 5 00:10

Sad Documentary Piano Background is an emotional and dramatic documentary score. Very calm, slow and inspirational. Gentle piano melody, romantic and evolving. Sad Documentary is great for documentary films, inspiring videos, wedding, love stories, ceremony, and documentary drama. It can be used also in dramatic stories, achievement, emotional development or summary of social or environmental processes. It sounds like inspiring, soft, tender, dramatic, emotional and more.

This item includes 5 versions (wav) in zip file:
Sad Documentary Piano Background Main (2:35)
Sad Documentary Piano Background Middle (1:58)
Sad Documentary Piano Background Short (1:13)
Sad Documentary Piano Background Loop 1 (0:09)
Sad Documentary Piano Background Loop 2 (0:09)
悲伤的纪录片钢琴背景是一部情感和戏剧性的纪录片配乐。非常冷静、缓慢和鼓舞人心。柔和的钢琴旋律，浪漫而不断发展。悲伤纪录片非常适合纪录片、鼓舞人心的视频、婚礼、爱情故事、仪式和纪录片。它也可以用于戏剧性的故事，成就，情感发展或社会或环境过程的总结。听起来像是鼓舞人心的，柔和的，温柔的，戏剧性的，情感的等等。

此项目包括zip文件中的5个版本 (wav):
悲伤的纪录片钢琴背景主 (2:35)
悲伤的纪录片钢琴背景中间 (1:58)
悲伤的纪录片钢琴背景短片 (1:13)
悲伤纪录片钢琴背景循环1 (0:09)
悲伤纪录片钢琴背景循环2 (0:09)